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Critical Reasoning: Inference and Conclusions

88 questions

All types88Multiple choice48True / False23Matching9Fill in the blank8
Question 21Question →

Which of the following most logically completes the passage below?

Fill in the blanks below

Biotechnology startups developing treatments for ultra-rare pediatric conditions rely almost exclusively on early-stage venture funding, which investors typically recoup when established pharmaceutical conglomerates acquire these startups prior to costly Phase III clinical trials. To incentivize innovation, a regulatory body extended patent protection for ultra-rare disease therapies from 10 to 15 years. However, early-stage venture investment in these startups subsequently declined by 35%. Industry analysts explain that the prolonged exclusivity window allows prospective corporate acquirers to postpone acquisitions until after startups independently navigate late-stage trial risks without fearing that generic competitors will enter the market prematurely. Because major firms now defer buyouts until Phase III completion, early-stage venture investors .
Show answer & explanation

Answer

must bear uncompensated late-stage clinical risks and extended capital lockup periods, rendering early-stage investments far less attractive
The passage sets up a paradox: extending patent protection was intended to increase innovation, but early-stage funding dropped. The explanation given is that extended patent life allows large pharma acquirers to wait longer before buying startups, forcing startups to bear Phase III trial risks on their own. The option stating that early-stage investors face prolonged capital lockup and heightened risk before acquisition logically completes the causal chain explaining why venture investment declined.

Step-by-Step Solution

1
Analyze the premises and structural flow of the argument
Premise 1: Venture capitalists fund early biotech startups expecting acquisition before Phase III trials. Premise 2: Patent extension increased exclusivity from 10 to 15 years. Premise 3: The longer exclusivity allows big pharma to delay acquiring startups until AFTER Phase III trials without losing market window advantages. Result: Startups must now fund expensive, risky Phase III trials themselves before an acquisition occurs.
Completing a passage logically requires synthesizing all given premises to find the unstated necessary result.
2
Evaluate the financial consequence for early-stage venture investors
Since acquisition is delayed past Phase III trials, venture capitalists can no longer exit early and must absorb the capital lockup and high clinical failure rates of late-stage trials.
The blank follows 'Because major firms now defer buyouts until Phase III completion, early-stage venture investors...' requiring a conclusion that directly links delayed buyouts to reduced investor incentive.

Key Concept

Completing the Passage Logically
Question 22Question →

Under municipal heritage protection rules, a private conservation laboratory is granted an Elite Restoration License only if it maintains a continuous remote environmental monitoring system. A laboratory maintains a continuous remote environmental monitoring system whenever it operates an automated climate regulation system certified by the Standards Bureau. Furthermore, a laboratory requires an Elite Restoration License to be eligible to bid on state-funded artifact restoration contracts.

If the statements above are true, which of the following must also be true?

Show answer & explanation

Answer: A laboratory that is eligible to bid on state-funded artifact restoration contracts maintains a continuous remote environmental monitoring system.

Answer

A laboratory that is eligible to bid on state-funded artifact restoration contracts maintains a continuous remote environmental monitoring system.
The passage establishes that eligibility to bid on state-funded contracts requires an Elite Restoration License, which in turn requires maintaining a continuous remote environmental monitoring system. Linking these two necessary conditions creates a valid transitive chain: Bidding Eligibility -> Elite Restoration License -> Remote Environmental Monitoring. Thus, any laboratory eligible to bid must maintain a continuous remote environmental monitoring system.

Step-by-Step Solution

1
Formalize the conditional premises from the passage.
Premise 1: Bidding Eligibility -> Elite License. Premise 2: Elite License -> Remote Monitoring. Premise 3: Certified Climate System -> Remote Monitoring.
Translating natural language indicators ('only if', 'whenever', 'requires') into formal logic enables valid transitive deductions.
2
Chain the conditional statements involving Bidding Eligibility.
Bidding Eligibility -> Elite License -> Remote Monitoring.
Using hypothetical syllogism, if A requires B and B requires C, then A requires C.
3
Deduce the necessary inference.
Any laboratory eligible to bid on state-funded artifact restoration contracts must maintain a continuous remote environmental monitoring system.
This conclusion follows with formal logical certainty from the premise chain.

Key Concept

Conditional Logic Chaining and Valid Transitive Deductions
Question 23Question →

In 2025, every commercial solar farm operated by Helios Power produced more electricity than it did in 2024. During the same period, Helios Power neither acquired any new solar farms nor decommissioned any existing ones. Which of the following statements must be true based on the information above?

Show answer & explanation

Answer: The total electricity produced by all of Helios Power's commercial solar farms combined was greater in 2025 than in 2024.

Answer

The total electricity produced by all of Helios Power's commercial solar farms combined was greater in 2025 than in 2024.
The correct option is strictly guaranteed by combining the two premises. Since every farm in a fixed portfolio increased its electricity output from 2024 to 2025, the combined total output of that portfolio necessarily increased in 2025.

Step-by-Step Solution

1
Analyze the given premises
Identified two key facts: (1) Each individual farm operated by Helios Power produced more electricity in 2025 than in 2024; (2) The roster of farms remained identical between both years.
Establishing the precise scope of facts prevents falling into out-of-scope or speculative inference traps.
2
Deduce the necessary conclusion
If every component of a fixed set increases in value, the total sum of the set must strictly increase.
A valid GMAT inference must be mathematically or logically guaranteed by the text without relying on external assumptions.
3
Evaluate the answer choices against strict logical necessity
The statement regarding total combined electricity output is guaranteed. All other choices introduce unstated causes, financial metrics, external entities, or invalid logical reversals.
Eliminating options that 'could be true' or fall outside the stated facts leaves the single 'must be true' statement.

Key Concept

Avoiding Out-of-Scope and 'Could Be True' Inference Traps
Question 24Question →

An enterprise software firm achieves ISO certification only if it implements end-to-end data encryption across all servers. Implementing end-to-end data encryption requires adopting a zero-trust network architecture. Furthermore, an enterprise software firm is permitted to bid on high-security municipal contracts only if it achieves ISO certification. Firm Apex is currently permitted to bid on high-security municipal contracts.

If the statements above are true, which of the following must also be true about Firm Apex?

Show answer & explanation

Answer: Firm Apex has adopted a zero-trust network architecture.

Answer

Firm Apex has adopted a zero-trust network architecture.
The correct answer is derived from chaining the formal conditional rules provided: Permitted to Bid requires ISO Certification, which requires End-to-End Encryption, which requires Zero-Trust Architecture. Since Firm Apex is permitted to bid, it must satisfy all necessary prerequisites along the chain, including adopting a zero-trust network architecture.

Step-by-Step Solution

1
Analyze the conditional premises in the passage
Premise 1: ISO Certification → End-to-End Encryption
Premise 2: End-to-End Encryption → Zero-Trust Architecture
Premise 3: Permitted to Bid → ISO Certification
Indicator words like 'only if' and 'requires' establish necessary conditions.
2
Chain the conditional statements transitively
Permitted to Bid → ISO Certification → End-to-End Encryption → Zero-Trust Architecture
Since each necessary condition links to the next, we can form a valid transitive deduction chain.
3
Apply the given fact about Firm Apex to the chain
Firm Apex is Permitted to Bid → Firm Apex MUST have adopted Zero-Trust Architecture
If the sufficient condition (Permitted to Bid) is true, all necessary conditions in the chain must also be true.

Key Concept

Transitive Chaining of Necessary Conditions
Question 25Question →

Passage: A scientific research journal will publish a manuscript only if the manuscript undergoes a double-blind peer review. A manuscript undergoes a double-blind peer review whenever it contains fully anonymized dataset references. Furthermore, a manuscript contains fully anonymized dataset references unless the authors submit a formal data-sharing exemption.

Based on the information provided, is the following statement True or False?
Statement: 'If authors do not submit a formal data-sharing exemption, their manuscript necessarily undergoes a double-blind peer review.'

Show answer & explanation

Answer: True

Answer

True
The statement is logically sound because combining the conditional rules yields a continuous valid chain: omitting a data-sharing exemption guarantees the inclusion of fully anonymized dataset references, which in turn guarantees that the manuscript undergoes a double-blind peer review.

Step-by-Step Solution

1
Formalize the conditional premises from the passage.
Premise 1: Publish →\rightarrow Peer Review. Premise 2: Anonymized Datasets →\rightarrow Peer Review. Premise 3: ¬\neg Exemption →\rightarrow Anonymized Datasets.
Mapping the indicators ('only if', 'whenever', 'unless') into formal logic enables precise evaluation of validity.
2
Chain the relevant conditional statements to evaluate the target statement.
Combine Premise 3 and Premise 2: ¬\neg Exemption →\rightarrow Anonymized Datasets →\rightarrow Peer Review.
Since the conclusion of Premise 3 matches the condition of Premise 2, a valid transitive deduction is formed.
3
Compare the derived transitive deduction with the evaluated statement.
The statement asserts that ¬\neg Exemption →\rightarrow Peer Review, which perfectly matches the derived deduction.
The conclusion logically and necessarily follows from the provided premises.

Key Concept

Transitive Conditional Logic Chains
Question 26Question →

A financial technology firm will obtain an international trade license only if it completes a multi-jurisdictional compliance audit. Completing a multi-jurisdictional compliance audit requires establishing a dedicated risk-assessment division, unless the firm qualifies for a special regulatory waiver. However, no firm that handles decentralized digital asset transactions qualifies for a special regulatory waiver. Novabank handles decentralized digital asset transactions and has recently been granted an international trade license.

If the statements above are true, which of the following must also be true about Novabank?

Show answer & explanation

Answer: Novabank has established a dedicated risk-assessment division.

Answer

Novabank has established a dedicated risk-assessment division.
The correct option is derived through a chain of formal conditional deductions. The stimulus establishes that obtaining an international trade license requires completing a multi-jurisdictional compliance audit. It further establishes that an audit requires a dedicated risk-assessment division unless a regulatory waiver applies. Finally, handling decentralized digital asset transactions rules out a regulatory waiver. Because Novabank possesses a trade license and handles digital assets, it must have completed the audit without a waiver, which strictly necessitates that Novabank established a dedicated risk-assessment division.

Step-by-Step Solution

1
Analyze the conditional premises and given facts.
Premise 1: License → Audit. Premise 2: Audit → (Risk-Assessment Division OR Waiver). Premise 3: Digital Assets → NOT Waiver. Facts: Novabank has License AND Novabank has Digital Assets.
Deconstruct complex conditional statements into formal logical terms.
2
Deduce consequences of Novabank having an international trade license.
Since Novabank has a License, according to Premise 1, Novabank MUST have completed the multi-jurisdictional compliance audit.
Apply modus ponens on the necessary condition of licensing.
3
Deduce consequences of Novabank handling decentralized digital assets.
Since Novabank handles digital assets, according to Premise 3, Novabank CANNOT qualify for a regulatory waiver.
Determine the status of the exception clause.
4
Synthesize the intermediate deductions to reach the final valid inference.
Novabank completed the Audit (from Step 2). Audit requires Risk-Assessment Division UNLESS Waiver (from Premise 2). Since Waiver is false (from Step 3), Novabank MUST have established a dedicated risk-assessment division.
Combine disjunctive elimination with conditional requirement.

Key Concept

Chained Conditional Deductions and Disjunctive Elimination
Question 27Question →

Which phrase logically completes the passage below?

Fill in the blanks below

A commercial bakery recently replaced its gas-powered ovens with high-efficiency electric ovens that consume 30 percent less energy per batch of goods. Although electricity costs more per unit of energy than natural gas does in this region, the bakery's total monthly expenditure on oven energy decreased immediately after the replacement. Assuming energy prices and production volume remained constant, this financial outcome indicates that .
Show answer & explanation

Answer

the reduction in energy consumption was large enough to offset the higher unit cost of electricity
Total energy spending is determined by multiplying total energy consumed by the price per unit of energy. The passage states that the per-unit price of electricity is higher than that of gas, yet overall spending decreased. The only logical explanation for total spending falling under a higher unit rate is that the 30 percent reduction in energy consumption was large enough to outweigh the higher unit cost of electricity.

Step-by-Step Solution

1
Identify the given premises in the passage
1. Electric ovens use 30% less energy per batch than gas ovens.
2. Electricity costs more per unit of energy than natural gas.
3. Total monthly energy spending decreased after switching to electric ovens.
Understanding the factual foundation of the argument is required before completing the logical bridge.
2
Analyze the relationship between unit cost, usage volume, and total expenditure
Total Expenditure = (Energy Consumed) × (Cost Per Unit of Energy).
Since the cost per unit increased, total expenditure could only decrease if the decrease in energy consumed was substantial enough to outweigh the price increase.
3
Formulate the logical completion
The lower volume of energy consumed was sufficient to overcome the higher per-unit rate of electricity.
This directly explains how total spending fell despite paying a higher unit price.

Key Concept

Completing the Passage Logically
Estimated Time:1m 0s
Question 28Question →

Agricultural researchers recently developed a genetically modified strain of wheat designed to emit a synthetic distress pheromone whenever attacked by aphids, thereby attracting native parasitic wasps that prey on the aphids. In initial trials, aphid infestation levels fell by 75 percent without requiring synthetic insecticides. However, subsequent ecological monitoring revealed that because the wheat continuously synthesizes the pheromone throughout its entire growth cycle—even when aphid density is negligible—local parasitic wasp populations suffer severe energy depletion from futile search behaviors, leading to a complete population collapse by the third harvest. Therefore, to sustain the efficacy of this biological pest management strategy across multiple growing seasons, farm managers should __________.

Which of the following choices most logically completes the passage?

Show answer & explanation

Answer: alternate the bio-engineered wheat with non-pheromone-emitting crop varieties to ensure periods during which parasitic wasps are not exposed to constant, unrewarded foraging cues

Answer

To sustain the efficacy of this biological pest management strategy across multiple growing seasons, farm managers should alternate the bio-engineered wheat with non-pheromone-emitting crop varieties to ensure periods during which parasitic wasps are not exposed to constant, unrewarded foraging cues.
The correct response logically completes the passage by directly counteracting the biological mechanism causing wasp population collapse. The passage states that wasps suffer energy depletion because the wheat continuously emits distress pheromones even when aphids are scarce. Alternating the bio-engineered wheat with non-emitting crops breaks this continuous false signal, giving wasp populations periods without futile foraging cues so they can survive across consecutive seasons.

Step-by-Step Solution

1
Identify the primary goal and core problem presented in the stimulus
Goal: Sustain the efficacy of the bio-engineered wheat pest management system over multiple seasons. Problem: Continuous pheromone emissions exhaust wasp energy during periods of low aphid density, causing wasp population collapse by season three.
Completing the argument requires finding a measure that directly eliminates the root cause of the wasp population collapse without undermining the biological pest control objective.
2
Analyze the cause-and-effect relationship established by the premises
Continuous emission during low aphid periods → Futile wasp foraging → Energy depletion → Wasp population crash.
To prevent the wasp population crash, the continuous false signaling during periods without aphids must be interrupted or mitigated.
3
Evaluate the option choices against the required logical completion
Alternating with non-emitting crop varieties provides resting periods where wasps are not subjected to unrewarded foraging cues, directly addressing the mechanism of energy depletion.
Only an option that resolves the unrewarded foraging mechanism while maintaining the biological control strategy logically completes the manager's action statement.

Key Concept

Logical Completion through Cause-and-Effect Synthesis
Question 29Question →

Under current financial regulatory guidelines, a fintech enterprise is eligible for an expedited compliance audit only if it maintains a fully decentralized data architecture or operates under an approved regulatory sandbox exemption. An enterprise operates under an approved regulatory sandbox exemption only if its annual cross-border transaction volume does not exceed $50 million, unless it has secured a specialized risk-mitigation endorsement. Furthermore, any enterprise that maintains a centralized data architecture is strictly prohibited from obtaining a specialized risk-mitigation endorsement.

If a fintech enterprise maintains a centralized data architecture and processes $60 million in annual cross-border transactions, which of the following must be true based on the guidelines above?

Show answer & explanation

Answer: The enterprise is not eligible for an expedited compliance audit.

Answer

The enterprise is not eligible for an expedited compliance audit.
The passage establishes three conditional statements: (1) Expedited Audit requires either Decentralized Architecture OR Sandbox Exemption. (2) If Volume > 50million,SandboxExemptionrequiresaSpecializedEndorsement.(3)CentralizedArchitecturepreventsobtainingaSpecializedEndorsement.ForafirmwithCentralizedArchitectureand50 million, Sandbox Exemption requires a Specialized Endorsement. (3) Centralized Architecture prevents obtaining a Specialized Endorsement. For a firm with Centralized Architecture and 60 million in volume: Centralized Architecture implies no Specialized Endorsement. Processing $60 million without a Specialized Endorsement means it cannot have a Sandbox Exemption. Having Centralized Architecture (no Decentralized Architecture) and no Sandbox Exemption means both necessary conditions for an Expedited Audit fail. Thus, it strictly follows that the enterprise is not eligible for an expedited compliance audit.

Step-by-Step Solution

1
Formalize Premise 1 (Expedited Audit Eligibility)
Expedited Audit → Decentralized Architecture OR Sandbox Exemption. (Contrapositive: NOT Decentralized Architecture AND NOT Sandbox Exemption → NOT Expedited Audit)
Establishes the necessary conditions required for expedited audit eligibility.
2
Formalize Premise 2 (Sandbox Exemption Requirements)
Sandbox Exemption AND Volume > 50million→SpecializedEndorsement.(Contrapositive:NOTSpecializedEndorsementANDVolume>50 million → Specialized Endorsement. (Contrapositive: NOT Specialized Endorsement AND Volume > 50 million → NOT Sandbox Exemption)
Determines when a specialized risk-mitigation endorsement is necessary for maintaining sandbox status.
3
Formalize Premise 3 (Endorsement Restrictions)
Centralized Architecture → NOT Specialized Endorsement.
Links data architecture structure directly to endorsement eligibility.
4
Chain the deductions for a firm with Centralized Architecture and $60M Volume
1. Centralized Architecture → NOT Specialized Endorsement.
2. Volume > 50M(50M ( 60M) AND NOT Specialized Endorsement → NOT Sandbox Exemption.
3. Centralized Architecture (NOT Decentralized Architecture) AND NOT Sandbox Exemption → NOT Expedited Audit.
Applies contrapositive logic iteratively to derive the necessary conclusion.

Key Concept

Chained Conditional Logic and Contrapositive Deductions
Question 30Question →

Which of the following most logically completes the argument below?

A city recently installed automated solar-powered traffic signals at several busy intersections to reduce municipal electricity costs. Although the initial purchase price of these solar signals was higher than that of standard signals, the solar units generate all their own electricity and require minimal ongoing maintenance. Because the long-term savings on electricity and routine maintenance will exceed the higher upfront installation costs, city officials concluded that adopting these solar signals will ultimately ________.

Show answer & explanation

Answer: reduce the city's overall financial expenditures for operating these traffic signals over their lifetime.

Answer

The correct completion is that adopting the solar signals will ultimately reduce the city's overall financial expenditures for operating these traffic signals over their lifetime.
The argument sets up a financial comparison: higher upfront costs balanced against even greater operational and maintenance savings over time. Summing these factors leads strictly to a net savings over the signals' operational lifetime, making the option regarding reduced overall lifetime expenditures the only logically sound completion.

Step-by-Step Solution

1
Analyze the given premises.
Premise 1: Upfront purchase costs for solar signals are higher than standard signals. Premise 2: Solar signals generate their own power and require minimal maintenance. Premise 3: Accumulated savings on electricity and maintenance will exceed the higher initial cost.
Understanding all premises is essential to determining the net logical conclusion.
2
Synthesize the premises to find the direct logical outcome.
If total lifetime savings exceed the initial excess cost, the net financial result is an overall reduction in total lifetime operating costs.
The conclusion of a 'completing the passage' item must strictly follow from the combination of stated premises without requiring external assumptions.

Key Concept

Completing the Passage Logically
Question 31Question →

Under the 2025 Financial Technology Modernization Act, any proprietary trading firm operating automated execution algorithms in Market Region Z must maintain an immutable audit trail of all order routing decisions. During the third quarter of 2025, every trading firm operating in Market Region Z that experienced an algorithmic order routing failure was subjected to an immediate full-scale regulatory compliance audit. Furthermore, during that same quarter, no firm subjected to a full-scale regulatory compliance audit had maintained an immutable audit trail of all order routing decisions.

If the statements above are true, which of the following must also be true on the basis of them?

Show answer & explanation

Answer: During the third quarter of 2025, every trading firm in Market Region Z that experienced an algorithmic order routing failure failed to maintain an immutable audit trail of all order routing decisions.

Answer

During the third quarter of 2025, every trading firm in Market Region Z that experienced an algorithmic order routing failure failed to maintain an immutable audit trail of all order routing decisions.
The correct answer is a direct, necessary deduction from the passage's two main facts. The stimulus establishes that every firm in Market Region Z experiencing a routing failure in Q3 2025 was audited, and that no audited firm in that quarter had maintained an immutable audit trail. Linking these two facts creates a solid chain of logic: any firm experiencing a routing failure in Q3 2025 necessarily fell into the group of audited firms, none of which had maintained an immutable audit trail.

Step-by-Step Solution

1
Identify and break down the explicit factual premises provided in the stimulus.
Premise 1: Routing Failure (Q3 2025) → Subjected to Full-Scale Regulatory Compliance Audit. Premise 2: Full-Scale Regulatory Compliance Audit (Q3 2025) → Did NOT Maintain Immutable Audit Trail.
Establishing formal conditional relationships allows for precise logical synthesis without relying on unstated assumptions.
2
Synthesize the conditional chain using the transitive property.
Routing Failure (Q3 2025) → Full-Scale Audit → Did NOT Maintain Immutable Audit Trail. Therefore, Routing Failure (Q3 2025) → Did NOT Maintain Immutable Audit Trail.
Combining Premise 1 and Premise 2 yields a necessary conclusion that must be true based solely on the provided facts.
3
Evaluate the answer choices to identify the option that strictly matches this deduction while eliminating assumptions and speculations.
The statement asserting that every firm with a routing failure failed to maintain an immutable audit trail strictly expresses this valid deduction.
Valid GMAT inferences must follow necessarily from the premises with 100% certainty.

Key Concept

Distinguishing Inferences from Assumptions and Speculations
Estimated Time:2m 0s
Question 32Question →

A regional commercial airline compiled operational data for all scheduled flights across its Eastern Division during 2025. Analysis of the logs revealed that every flight experiencing a departure delay exceeding 45 minutes had undergone unscheduled engine maintenance earlier that same day. Additionally, none of the flights that underwent unscheduled engine maintenance earlier that day arrived at their destination on schedule.

Which of the following can be properly inferred from the passage above?

Show answer & explanation

Answer: Every flight in the Eastern Division during 2025 that experienced a departure delay exceeding 45 minutes failed to arrive at its destination on schedule.

Answer

Every flight in the Eastern Division during 2025 that experienced a departure delay exceeding 45 minutes failed to arrive at its destination on schedule.
The correct answer directly synthesizes the two stated factual premises using transitive deduction: every flight with a departure delay exceeding 45 minutes underwent unscheduled engine maintenance, and every flight that underwent unscheduled engine maintenance failed to arrive on schedule. Therefore, any flight with a departure delay exceeding 45 minutes necessarily failed to arrive on schedule.

Step-by-Step Solution

1
Identify the explicit premises given in the stimulus.
Premise 1: Departure delay > 45 min → Unscheduled engine maintenance. Premise 2: Unscheduled engine maintenance → NOT arrive on schedule.
Inference questions require strictly combining stated premises without introducing unstated assumptions.
2
Apply transitive conditional logic to connect the premises.
Departure delay > 45 min → Unscheduled engine maintenance → NOT arrive on schedule.
If A implies B, and B implies C, then A must imply C.
3
Evaluate the choices to find the one that MUST BE TRUE based solely on this deduction.
The statement that any flight delayed by over 45 minutes failed to arrive on schedule is a direct, inescapable logical deduction.
An inference must be guaranteed by the premises, whereas assumptions and speculations add unproven claims.

Key Concept

Distinguishing strict logical inferences (Must Be True) from unstated causal assumptions and out-of-scope speculations.
Question 33Question →

A corporate compliance officer established the following rule for international transactions: Any transaction exceeding $100,000 requires prior approval from the risk assessment committee. Furthermore, whenever a transaction requires prior approval from the risk assessment committee, it must undergo a secondary audit by an independent auditor.

If an international transaction exceeded $150,000, which of the following must be true based on the compliance officer's rule?

Show answer & explanation

Answer: The transaction must undergo a secondary audit by an independent auditor.

Answer

The transaction must undergo a secondary audit by an independent auditor.
The passage establishes a direct chain of conditional logic: a transaction exceeding 100,000requiresriskassessmentcommitteeapproval,andanytransactionrequiringsuchapprovalmustundergoasecondaryauditbyanindependentauditor.Because100,000 requires risk assessment committee approval, and any transaction requiring such approval must undergo a secondary audit by an independent auditor. Because 150,000 is greater than $100,000, both conditions in the chain are sequentially triggered, making it logically necessary that the transaction undergoes a secondary audit by an independent auditor.

Step-by-Step Solution

1
Identify the given condition for the specific transaction
The transaction value is 150,000,whichsatisfiesthethresholdconditionof′exceeding150,000, which satisfies the threshold condition of 'exceeding 100,000'.
Establishing that the initial condition (150,000>150,000 > 100,000) is met triggers the first conditional rule.
2
Apply the first conditional rule
Since 150,000>150,000 > 100,000, the transaction requires prior approval from the risk assessment committee.
Rule 1 states: Transaction > $100,000 → Requires risk assessment committee approval.
3
Apply the second conditional rule in the chain
Because the transaction requires prior approval from the committee, it must undergo a secondary audit by an independent auditor.
Rule 2 states: Requires committee approval → Must undergo secondary audit by an independent auditor.

Key Concept

Hypothetical Syllogism (Chained Conditional Deductions)
Estimated Time:1m 0s
Question 34Question →

An agricultural board rule dictates that an orchard receives an organic certification only if it refrains from using synthetic pesticides for at least three consecutive years. Orchard Y has not used synthetic pesticides for the past four consecutive years.

Statement: Based on the rule above, Orchard Y must have received an organic certification.

Show answer & explanation

Answer: False

Answer

The statement is False. Meeting a necessary condition does not guarantee that a sufficient condition is met.
The statement is False because the agricultural board rule uses the phrase 'only if', establishing that avoiding synthetic pesticides is a necessary requirement for certification, not a guarantee of it. Satisfying a necessary condition does not prove that the final outcome must occur.

Step-by-Step Solution

1
Identify the conditional relationship in the premise
Organic Certification → No synthetic pesticides for at least 3 years
The indicator 'only if' introduces a necessary condition.
2
Analyze the given fact about Orchard Y
Orchard Y satisfies the necessary condition (4 years without synthetic pesticides ≥ 3 years).
The premise states Orchard Y met the required timeframe.
3
Evaluate whether the conclusion logically follows
Inferring that Orchard Y must be certified is an invalid deduction (Mistaken Reversal).
Satisfying a necessary condition does not automatically trigger the outcome, as additional unstated conditions may be required.

Key Concept

Distinguishing Necessary Conditions from Sufficient Conditions
Question 35Question →

A biomedical research consortium establishes the following funding protocol: A clinical study receives financial backing only if the project team secures institutional ethics board certification and implements synthetic biomarker tracking. Securing institutional ethics board certification requires that the study protocol either undergoes double-blind peer review or obtains a regulatory exemption from the central health committee.

Consider the following assertion: If Study X was denied financial backing and did not obtain a regulatory exemption from the central health committee, then Study X must have failed to undergo double-blind peer review.

Show answer & explanation

Answer: False

Answer

The statement is False.
Evaluating the statement as False is correct because the rules state that financial backing requires ethics certification. The absence of financial backing does not imply that ethics certification was withheld or that double-blind peer review did not occur; Study X could have fulfilled the peer review requirement but missed financial backing due to another missing requirement (such as synthetic biomarker tracking).

Step-by-Step Solution

1
Formalize the conditional premises from the protocol.
Premise 1: Financial Backing → (Ethics Certification AND Synthetic Biomarker Tracking).
Premise 2: Ethics Certification → (Double-Blind Peer Review OR Regulatory Exemption).
Establishing formal logic notation prevents misinterpreting necessary conditions as sufficient conditions.
2
Analyze the given facts about Study X.
Facts: ¬Financial Backing and ¬Regulatory Exemption.
Identify which components of the conditional statements are known to be true or false.
3
Test the validity of the deduction: ¬Financial Backing → ¬Double-Blind Peer Review.
From Premise 1, Financial Backing requires Ethics Certification. However, the absence of Financial Backing (¬Financial Backing) does not logically imply the absence of Ethics Certification (¬Ethics Certification).
Denying the antecedent (¬Financial Backing) yields no valid inference about the consequent (Ethics Certification).
4
Determine whether double-blind peer review must be false.
Since Ethics Certification could still be true, Double-Blind Peer Review could also be true. Therefore, it is not logically necessary that Study X failed to undergo double-blind peer review.
A statement is only logically necessary if it must be true in all possible valid scenarios consistent with the premises.

Key Concept

Conditional Logic: Distinguishing Necessary vs. Sufficient Conditions and Avoiding the Mistaken Negation Fallacy
Question 36Question →

Which phrase logically completes the passage below?

Fill in the blanks below

Over the past decade, several major semiconductor manufacturers transitioned from 28nm to 7nm lithography processes, expecting dramatic reductions in unit production costs. However, while 7nm chips offer superior power efficiency and transistor density, the capital expenditure required for extreme ultraviolet (EUV) lithography equipment and cleanroom upgrades increased exponentially rather than linearly with smaller node sizes. Consequently, unless a semiconductor manufacturer operates at an exceptionally high production volume capable of amortizing these massive upfront equipment investments, transitioning to 7nm lithography will .
Show answer & explanation

Answer

The transition to 7nm lithography will result in higher per-unit production costs overall than remaining on older fabrication nodes.
The passage establishes that transitioning to 7nm lithography involves exponentially higher upfront capital costs. These high fixed costs must be amortized over a high volume of units to reduce average cost per unit. Therefore, without exceptionally high volume, the amortized fixed costs per unit will outweigh operational savings, resulting in higher per-unit costs compared to older nodes.

Step-by-Step Solution

1
Analyze the premises provided in the passage.
Manufacturers expected node shrinkage (28nm to 7nm) to lower unit costs. However, upfront capital costs for equipment increased exponentially.
Establishing the premise relationships helps determine what logically follows.
2
Synthesize the conditional relationship regarding production volume.
Massive upfront capital expenditures can only be amortized across very high unit volumes. Without such exceptionally high volume, fixed capital costs per unit remain very large.
High fixed costs distributed over a smaller volume increase the average cost per unit.
3
Deduce the logical continuation of the final sentence.
Since the sentence begins with 'unless a manufacturer operates at an exceptionally high production volume...', the outcome for low-to-moderate volume producers must be an increase in total per-unit costs compared to staying on older nodes.
The conclusion directly completes the logical contrast established by the premises without introducing external assumptions.

Key Concept

Completing the Passage Logically
Question 37Question →

In a recent study evaluating corporate restructuring in high-tech manufacturing firms from 2018 to 2024, researchers observed that every firm that reduced its middle-management workforce by more than 20% simultaneously increased its expenditure on automated workflow software by at least 30%. Furthermore, none of the firms that increased their software expenditure by at least 30% experienced a drop in quarterly operating margins during the study period. However, more than half of all manufacturing firms in the study that retained their entire middle-management workforce reported a decrease in annual R&D allocation.

If the statements above are all true, which of the following must also be true based on them?

Show answer & explanation

Answer: No high-tech manufacturing firm in the study that reduced its middle-management workforce by more than 20% experienced a drop in quarterly operating margins during the study period.

Answer

No high-tech manufacturing firm in the study that reduced its middle-management workforce by more than 20% experienced a drop in quarterly operating margins during the study period.
The passage establishes two formal statements: (1) Every firm reducing middle management by >20% increased software expenditure by ≥30%, and (2) None of the firms increasing software expenditure by ≥30% had a drop in quarterly operating margins. Combining these statements transitively proves that any firm reducing middle management by >20% necessarily avoided a drop in quarterly operating margins. Thus, the statement asserting that no such firm experienced a drop in operating margins must be true.

Step-by-Step Solution

1
Identify and symbolize the explicit conditional premises from the text
Premise 1: Reduced middle management >20% → Increased software expenditure ≥30%. Premise 2: Increased software expenditure ≥30% → NO drop in quarterly operating margins.
Mapping the conditional logic allows clear evaluation of valid chain deductions versus invalid reversals or inverses.
2
Synthesize the premises via hypothetical syllogism (transitive property)
Reduced middle management >20% → NO drop in quarterly operating margins.
Since the necessary condition of Premise 1 matches the sufficient condition of Premise 2, a direct link between the initial condition and final result is logically guaranteed.
3
Evaluate the answer choices to identify the strictly necessary deduction and eliminate 'could be true' or out-of-scope traps
The statement asserting that no firm reducing middle management by >20% experienced a drop in quarterly operating margins is logically mandatory.
GMAT Critical Reasoning inference items require a statement that MUST be true without outside assumptions or formal logical fallacies.

Key Concept

Combining Conditional Logic Premises and Avoiding 'Could Be True' / Out-of-Scope Traps
Question 38Question →

Complete the passage logically by providing the missing conclusion.

Fill in the blanks below

During the late nineteenth century, transoceanic telegraph cable networks relied on gutta-percha—a natural latex resin—for underwater insulation. Because gutta-percha harvested from tropical trees degraded rapidly when exposed to ambient air and sunlight, storing it in land-based facilities often rendered it unusable before manufacturing began. However, when continuously submerged in cold water, the material retained its chemical stability and structural flexibility indefinitely. Consequently, cable suppliers realized that rather than constructing costly climate-controlled land storage warehouses, they could preserve harvested resin prior to shipping simply by .
Show answer & explanation

Answer

Submerging the harvested resin in cold water reservoirs or local aquatic basins prior to shipping.
The passage establishes two key facts: exposure to air and sunlight degrades harvested gutta-percha, whereas continuous submersion in cold water preserves it indefinitely. Therefore, to avoid the high cost of climate-controlled land warehouses, the most direct and logical solution is to store the harvested material submerged in cold water.

Step-by-Step Solution

1
Identify the main problem and the contrasting condition presented in the premises.
Air and sunlight degrade gutta-percha rapidly, rendering land storage costly and problematic, whereas continuous submersion in cold water preserves its properties indefinitely.
The conclusion must directly bridge the problem (air exposure causes decay) with the natural solution provided by the physical property (cold water submersion prevents decay).
2
Synthesize the contrast into a operational recommendation that completes the 'consequently' statement.
Instead of building expensive climate-controlled land warehouses, suppliers should store the harvested resin underwater in cold water environments prior to processing.
This directly completes the logical chain without introducing unstated assumptions or extrapolations.

Key Concept

Completing the Passage Logically
Question 39Question →

Based on the provided passage, evaluate whether the statement MUST BE TRUE based solely on the information given.

Passage:
During the third quarter of last year, a regional healthcare provider implemented a new digital triage system in all of its urgent care centers. During that same quarter, the average wait time for non-emergency patients at these centers decreased by 15 percent.

Statement:
The implementation of the digital triage system was the primary cause of the reduction in average wait times for non-emergency patients.

Show answer & explanation

Answer: False

Answer

The statement is False (it cannot be definitively inferred as a must-be-true conclusion).
The statement cannot be properly inferred because the passage only establishes that two events happened during the same period. Asserting that one event caused the other goes beyond the scope of the text and relies on an unproven assumption.

Step-by-Step Solution

1
Analyze the premises stated in the passage.
The passage provides two facts: (1) a digital triage system was introduced in Q3, and (2) average wait times for non-emergency patients fell by 15% in Q3.
Valid GMAT inferences rely strictly on facts explicitly stated in the stimulus.
2
Compare the statement's claim against the facts.
The statement claims that the triage system was the 'primary cause' of the wait-time drop.
The statement moves beyond mere correlation to assert a direct causal relationship.
3
Apply GMAT inference rules to evaluate logical necessity.
Two events occurring simultaneously does not prove that one caused the other; alternate explanations (such as increased staffing or lower patient volume) remain possible.
Assuming causality from concurrence is an unwarranted extrapolation trap, making the statement fail as a must-be-true conclusion.

Key Concept

Avoiding Causal and 'Could Be True' Inference Traps
Question 40Question →

Which of the following phrases most logically completes the passage below?

Fill in the blanks below

In recent years, several major pharmaceutical firms have transitioned from fixed-fee manufacturing contracts to outcome-based pricing models for newly approved rare-disease therapies, reimbursing healthcare providers if a drug fails to produce measurable clinical efficacy within six months. While proponents argued that this shift would incentivize drugmakers to release only highly effective treatments, industry analysts note that developing diagnostic tests to reliably verify six-month clinical efficacy requires substantial upfront capital that small biotech firms cannot afford. Consequently, if third-party insurers demand outcome-based pricing across all rare-disease therapies, small biotech developers will likely be forced to license their experimental compounds to large pharmaceutical conglomerates long before clinical trials conclude, thereby .
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Answer

The passage is most logically completed by indicating that mandatory outcome-based pricing will consolidate market dominance and commercialization control within large pharmaceutical conglomerates while preventing small biotechs from bringing therapies to market independently.
The correct logical completion must bridge the shift from biotechs being unable to fund diagnostic testing to their forced licensing of compounds to large pharmaceutical conglomerates. Early licensing deprives small biotechs of direct commercialization, thereby entrenching and consolidating market control of innovative rare-disease treatments within large pharmaceutical conglomerates.

Step-by-Step Solution

1
Identify and break down the premise chain in the passage.
Premise 1: Outcome-based pricing requires costly diagnostic tests to verify clinical efficacy. Premise 2: Small biotech firms lack the capital required to develop these diagnostic tests. Premise 3: Mandatory outcome-based pricing forces small biotechs to license their compounds to large pharmaceutical conglomerates early in clinical development.
Establishing the causal sequence of constraints described in the stimulus.
2
Synthesize the premise chain to infer the final unstated consequence.
Because small biotechs must hand over their experimental therapies early to large conglomerates, commercial control and market presence shifts heavily away from independent biotechs toward large pharmaceutical corporations.
Completing the argument logically requires drawing the direct result of forced early-stage licensing without introducing outside assumptions.

Key Concept

Completing the Passage Logically
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