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Question 121Question →

Deep within a mountain on the remote island of Spitsbergen, the Svalbard Global Seed Vault protects millions of crop seeds. The vault is built deep inside a sandstone mountain, where the surrounding permafrost maintains a natural freezing temperature even if the cooling system fails.

Which of the following options is the best choice for the underlined portion in the passage?

Show answer & explanation

Answer: NO CHANGE

Answer

NO CHANGE
The original phrasing 'NO CHANGE' is correct because it uses the relative adverb 'where' to connect a subordinate clause to the main clause. This subordinate clause is grammatically complete, contains a subject and a conjugated verb, and correctly modifies the preceding noun 'mountain'.

Step-by-Step Solution

1
Analyze the underlined portion to determine if the clause connection is grammatically correct and logical.
The original text uses the relative adverb 'where' to initiate a subordinate clause modifying the noun 'mountain'. This clause contains a subject ('permafrost') and a finite verb ('maintains'), making it grammatically complete as a subordinate clause.
Correct subordination allows the sentence to flow logically without creating run-ons or fragments.
2
Evaluate the other choices to identify punctuation and clause structure errors.
Removing 'where' and using a comma creates a comma splice between two independent clauses. Using a semicolon with 'because' creates a fragment since semicolons must separate two independent clauses. Using 'while' with the participle 'maintaining' fails to provide a finite verb, creating a fragment.
Standard English grammar rules prohibit joining independent clauses with only a comma, and dependent clauses cannot follow a semicolon or lack a finite verb.

Key Concept

Subordination and Coordination
Question 122Question →

Refer to the underlined portion marked [1] in the passage below:

Many species of mushrooms glow in the [1] dark, and this light attracts insects that help disperse their spores.

Which of the following choices best maintains the grammatical correctness of the sentence?

Show answer & explanation

Answer: NO CHANGE

Answer

The option containing 'NO CHANGE', which properly coordinates the two clauses using a comma and the coordinating conjunction 'and'.
The original text correctly uses a comma followed by the coordinating conjunction 'and' to join two independent clauses. This is a standard and grammatically correct way to coordinate complete thoughts.

Step-by-Step Solution

1
Identify the two clauses in the sentence.
The first clause is 'Many species of mushrooms glow in the dark' (independent) and the second clause is 'this light attracts insects that help disperse their spores' (independent).
To determine the correct punctuation and conjunction, we must first know if the clauses are independent or dependent.
2
Determine the grammatical relationship needed to join two independent clauses.
Two independent clauses can be joined by a comma followed by a coordinating conjunction (such as 'and').
Joining them without a coordinating conjunction creates a comma splice, and using a subordinating conjunction like 'because' inappropriately can create a fragment or disrupt the logical flow.

Key Concept

Subordination and Coordination
Estimated Time:45s
Question 123Question →

In the early 1900s, Henrietta Leavitt cataloged variable stars at the Harvard College Observatory. Although she was initially hired as a "computer" to perform calculations, Leavitt's meticulous analysis of photographic plates led to the discovery of the period-luminosity relation. While this landmark finding allowed astronomers to measure the distance to far-off galaxies, but she was not widely recognized for her contributions during her lifetime.

Which of the following is the best replacement for the underlined portion of the sentence?

Show answer & explanation

Answer: While this landmark finding allowed astronomers to measure the distance to far-off galaxies, she was

Answer

The choice that retains the subordinating conjunction "While" at the beginning of the clause and removes the coordinating conjunction "but" before the second clause, separating them with a comma.
The correct option properly subordinates the first clause with the conjunction "While" and separates it from the independent clause with a comma, creating a grammatically correct complex sentence that expresses a clear contrast.

Step-by-Step Solution

1
Analyze the clause structure of the sentence.
The sentence attempts to link a dependent clause expressing concession/contrast with a main independent clause.
Identifying clause types helps determine whether subordinating or coordinating punctuation and conjunctions are needed.
2
Identify the grammatical error in the original sentence.
The original sentence uses both "While" (subordinating) and "but" (coordinating) to connect the same two clauses.
Using two conjunctions to connect two clauses is redundant and structurally invalid, leaving the sentence without a main independent clause.
3
Evaluate the choices to find the grammatically correct structure.
The correct option removes the coordinating conjunction "but" and retains the subordinating conjunction "While" to introduce the dependent clause, separating it from the independent clause with a comma.
This establishes a clear, grammatically correct relationship of contrast between the dependent clause and the independent clause.

Key Concept

Subordination and Coordination
Question 124Question →

Which of the following options best corrects the underlined portion in the sentence below?

While studying the physical adaptations of desert fauna, biologists noted that the heat-dispersing ears of the jackrabbit are much larger than the desert cottontail, this difference helps regulate body temperature in extreme climates.

Show answer & explanation

Answer: those of the desert cottontail, a difference that helps

Answer

those of the desert cottontail, a difference that helps
The correct option establishes a logical comparison by using the plural pronoun phrase 'those of' to refer back to the 'ears' of the jackrabbit, comparing them parallelly to the ears of the desert cottontail. It also avoids punctuation errors by using a comma to introduce the appositive phrase 'a difference that helps...', which correctly modifies the preceding comparison.

Step-by-Step Solution

1
Analyze the items being compared in the sentence.
The sentence compares 'the heat-dispersing ears of the jackrabbit' to 'the desert cottontail.'
An illogical comparison occurs when a specific trait or part of one subject is compared directly to another subject as a whole.
2
Select the correct plural possessive pronoun phrase to restore logical parallel comparison.
Since 'ears' is plural, the phrase 'those of' must be used to refer to the ears of the desert cottontail.
Using 'those of' ensures that ears are being compared to ears, satisfying the requirement for logical and parallel comparison.
3
Evaluate the grammatical structure and punctuation of the subsequent clause.
The final part of the sentence must avoid comma splices and fragment errors. The correct phrasing uses a comma to introduce 'a difference that helps...', which functions as a proper appositive phrase rather than an independent clause.
A semicolon requires independent clauses on both sides, which makes the semicolon choice incorrect because the following text is a fragment. The appositive structure is grammatically correct and punctuated properly.

Key Concept

Illogical and Incomplete Comparisons
Question 125Question →

Identify the option that best replaces the underlined portion of the following sentence:

'The preservation techniques utilized by modern paleontologists when uncovering fragile avian fossils are far more sophisticated <u>than early fossil hunters, who</u> often damaged specimens during excavation.'

Which of the following options best replaces the underlined portion to ensure the sentence is logically and grammatically correct?

Show answer & explanation

Answer: than those of early fossil hunters, who

Answer

the option that states 'than those of early fossil hunters, who'
The correct option replaces the underlined portion with a phrase that compares the plural noun 'preservation techniques' to 'those' (representing the techniques) of early fossil hunters, establishing a logical comparison. It also correctly uses a comma followed by the relative pronoun 'who' to introduce a dependent relative clause modifying the hunters.

Step-by-Step Solution

1
Identify the elements compared in the original sentence.
The sentence compares 'The preservation techniques utilized by modern paleontologists' to 'early fossil hunters'.
A logical comparison must compare items of the same category (e.g., techniques to techniques, not techniques to people).
2
Identify a plural pronoun reference to correct the illogical comparison.
Since 'preservation techniques' is plural, the pronoun 'those' must be used to refer back to it, resulting in the comparison 'than those of early fossil hunters'.
This establishes a parallel and logical comparison between modern techniques and historical techniques.
3
Evaluate the grammar of the rest of the clause.
The clause 'who often damaged specimens during excavation' is a relative dependent clause modifying the hunters, requiring a relative pronoun like 'who' preceded by a comma, not a personal pronoun (which creates a comma splice) or a semicolon (which creates a fragment).
Proper punctuation and clause joining prevent structural errors such as run-on sentences or fragments.

Key Concept

Illogical and Incomplete Comparisons
Question 126Question →

The following passage contains an underlined portion. Choose the option that best corrects the underlined portion to ensure proper subordination and coordination.

Although the geochemist initially hypothesized that the mineral deposits were formed by volcanic <u>activity; but subsequent isotopic analysis of the crystals revealed a freshwater origin, complicating</u> the team's geological timeline.

Which option is the most grammatically correct and effective choice for the underlined portion?

Show answer & explanation

Answer: activity, subsequent isotopic analysis of the crystals revealed a freshwater origin, complicating

Answer

activity, subsequent isotopic analysis of the crystals revealed a freshwater origin, complicating
The correct option correctly uses a comma to connect the introductory dependent clause ('Although the geochemist initially hypothesized...') to the main independent clause ('subsequent isotopic analysis of the crystals revealed a freshwater origin'). It also avoids the redundant coordinating conjunction 'but' and correctly sets off the modifying participial phrase ('complicating the team's geological timeline') with a comma rather than a semicolon or comma splice.

Step-by-Step Solution

1
Analyze the sentence structure and identify the dependent and independent clauses.
The sentence begins with the subordinating conjunction 'Although', which makes 'Although the geochemist initially hypothesized that the mineral deposits were formed by volcanic activity' a dependent clause. This dependent clause must be followed by an independent clause to form a complete sentence.
Identifying clause types is essential for determining appropriate punctuation and conjunctions.
2
Evaluate the punctuation and conjunctions connecting the first two clauses.
A dependent clause cannot be separated from the main clause by a semicolon. Furthermore, the subordinating conjunction 'Although' already establishes the contrast, so using the coordinating conjunction 'but' is redundant.
This eliminates the original phrasing (which uses both a semicolon and 'but') and establishes that a comma must follow 'activity' with no coordinating conjunction.
3
Evaluate the relationship of the final phrase to the rest of the sentence.
The final part of the sentence, 'complicating the team's geological timeline', is a participial phrase. It cannot be separated by a semicolon, as that would create a fragment. Additionally, replacing 'complicating' with 'this finding complicated' creates a new independent clause, which results in an ungrammatical comma splice when joined only by a comma.
This eliminates the options containing the semicolon before 'complicating' and the comma splice ending with 'this finding complicated'.

Key Concept

Subordination and coordination rules require that dependent clauses be joined to independent clauses using appropriate punctuation (usually commas) rather than semicolons, and without redundant conjunctions. Additionally, independent clauses cannot be spliced together with only a comma, and dependent phrases cannot be isolated by semicolons.
Question 127Question →

In the sentence below, the underlined portion contains a comparison error.

The primary feathers of a bald eagle are much larger and stiffer than a hawk.

Which of the following options corrects the comparison error in the sentence?

Show answer & explanation

Answer: those of a hawk

Answer

The correct option is the one stating 'those of a hawk' because it compares the feathers of a bald eagle to the feathers of a hawk.
The choice stating 'those of a hawk' correctly uses the plural pronoun 'those' to refer to the primary feathers of a hawk, establishing a logical comparison between feathers and feathers.

Step-by-Step Solution

1
Identify the items being compared in the sentence.
The sentence compares 'primary feathers' (plural noun) to 'a hawk' (singular noun).
This is necessary to check if the comparison is logical and grammatically correct.
2
Select the correct pronoun to represent the compared item.
Since 'primary feathers' is plural, the plural pronoun 'those' is needed to represent the hawk's feathers.
The pronoun must agree in number with the noun it replaces and make the comparison logical.

Key Concept

Illogical and Incomplete Comparisons
Estimated Time:45s
Question 128Question →

In the following sentence, a portion is underlined:

"The coordinates of the ancient ruins were far more difficult to decipher than the modern cartographers, and they required advanced satellite imaging to map accurately."

Which of the following options most effectively corrects the underlined portion to ensure a logical comparison and correct sentence structure?

Show answer & explanation

Answer: than those of modern cartographers, and they

Answer

The option that corrects the comparison using 'than those of modern cartographers' and avoids a comma splice by using ', and they'.
The correct option resolves the illogical comparison by replacing 'the modern cartographers' with the plural possessive pronoun 'those of', which correctly refers back to 'coordinates'. Additionally, it correctly joins the two independent clauses using a comma and the coordinating conjunction 'and' followed by the subject 'they', maintaining proper sentence structure.

Step-by-Step Solution

1
Identify the items being compared in the original sentence.
The sentence compares 'The coordinates of the ancient ruins' with 'the modern cartographers'.
This is illogical because coordinates (data points) cannot be compared to cartographers (people).
2
Choose the correct pronoun to complete a logical comparison.
Because 'coordinates' is a plural noun, the plural possessive pronoun 'those of' must be used to refer back to it, yielding 'than those of modern cartographers'.
This compares coordinates to coordinates, which is logically and grammatically sound.
3
Evaluate the grammar of the clauses and check for proper coordination.
The final clause ('they required advanced satellite imaging...') is independent. To join it to the preceding independent clause, we must use a comma and a coordinating conjunction (', and they').
Using just a comma results in a comma splice, and using 'and requiring' violates parallel structure by mixing a past-tense verb with a participle.

Key Concept

Illogical and Incomplete Comparisons
Estimated Time:1m 0s
Question 129Question →

The research team successfully isolated the gene responsible for the enzyme's production. A discovery that could lead to new treatments for metabolic disorders.

Which choice best corrects the underlined portion of the sentence?

Show answer & explanation

Answer: production, a discovery that could lead

Answer

production, a discovery that could lead
The correct option correctly replaces the period with a comma, turning the fragment into an appositive phrase that modifies 'production' and creating a single, grammatically correct sentence.

Step-by-Step Solution

1
Analyze the underlined portion to determine if a grammatical error exists.
The text following the period, 'A discovery that could lead to new treatments for metabolic disorders,' has no main verb. It is a sentence fragment.
A complete sentence requires a subject and a verb that expresses a complete thought.
2
Evaluate how to connect the fragment to the preceding independent clause.
Using a comma allows the phrase starting with 'a discovery' to act as an appositive modifying the noun 'production' in the main clause.
Appositive phrases must be joined to their independent clauses using a comma.
3
Verify that the other choices do not introduce new punctuation errors.
A semicolon requires independent clauses on both sides, which rules out the option using a semicolon. Using a comma with a subject-verb clause ('this discovery could lead') without a coordinating conjunction creates a comma splice, ruling out that option.
Eliminating options with semicolon errors and comma splices ensures the final choice is grammatically sound.

Key Concept

Correcting sentence fragments by integrating dependent phrases into the main clause using appropriate punctuation.
Question 130Question →

Deep within the cloud forests of Ecuador, a research team sought to locate the elusive *Dracula simia*, or monkey orchid. The expedition faced treacherous weather and steep terrain. Neither the experienced field guides nor the lead botanist, despite having spent decades documenting rare flora, was willing to risk their safety by scaling the crumbling limestone cliff to retrieve the single remaining specimen.

Which of the following choices best replaces the underlined word to ensure correct pronoun-antecedent agreement?

Show answer & explanation

Answer: his or her

Answer

his or her
The correct choice is 'his or her' because the sentence features a compound subject connected by the correlative conjunction 'neither... nor'. When antecedents of different numbers are joined this way, the pronoun must agree with the nearer antecedent. The noun closest to the pronoun is 'lead botanist', which is singular. Thus, a singular pronoun is required. Since 'lead botanist' refers to a person of unspecified gender, the phrase 'his or her' is grammatically correct and appropriate.

Step-by-Step Solution

1
Identify the antecedent of the pronoun and the structure of the subject.
The subject uses a correlative conjunction: 'Neither the experienced field guides nor the lead botanist'.
This determines which noun the pronoun must agree with.
2
Apply the rule of proximity for compound subjects connected by 'nor'.
The pronoun must agree with the nearer noun, which is the singular 'lead botanist'.
When singular and plural subjects are joined by 'or' or 'nor', the pronoun agrees with the closer subject.
3
Determine the correct singular pronoun that matches the person and gender/context of the closer noun.
The noun 'lead botanist' refers to a person of unspecified gender, which requires the singular pronoun 'his or her'.
The pronoun must match in both number (singular) and person/gender (human, singular).

Key Concept

Pronoun-Antecedent Agreement with Correlative Conjunctions
Question 131Question →

During the Middle Ages, crop rotation systems significantly increased food production in Europe, especially after the introduction of the three-field <u>system. Which allowed</u> farmers to leave only one-third of their land fallow each year, rather than half.

Which of the following options represents the most grammatically correct revision of the underlined portion?

Show answer & explanation

Answer: system, which allowed

Answer

system, which allowed
The correct answer correctly attaches the dependent relative clause starting with 'which' to the main independent clause using a comma. This resolves the sentence fragment while maintaining proper punctuation for a non-essential relative clause.

Step-by-Step Solution

1
Analyze the underlined portion and the surrounding text to determine if it forms a complete sentence.
The clause starting with 'Which allowed' is a dependent relative clause that lacks a main independent subject-predicate structure. Separated by a period, it stands alone as a sentence fragment.
A dependent clause cannot stand alone as a complete sentence because it does not express a complete thought.
2
Evaluate the choices to find a version that connects the dependent clause to the main clause without creating punctuation errors.
Using a comma followed by the relative pronoun 'which' properly connects the non-restrictive relative clause to the preceding independent clause.
Non-restrictive relative clauses must be attached to the independent clause they modify using a comma.
3
Verify that other options introduce grammatical errors.
Replacing the period with a comma and 'this' results in a comma splice, while using a semicolon before 'which' creates a semicolon fragment.
Independent clauses cannot be joined with just a comma, and semicolons can only join two independent clauses.

Key Concept

Sentence Fragments
Question 132Question →

Urban heat islands present a growing challenge for modern climatologists. Because concrete and asphalt absorb more solar radiation than natural landscapes do. This phenomenon causes cities to experience significantly higher temperatures than their surrounding rural areas.

Which of the following choices is the best replacement for the underlined portion of the passage?

Show answer & explanation

Answer: climatologists because concrete and asphalt absorb more solar radiation than natural landscapes do. This

Answer

The correct choice is the option that joins the clauses without punctuation, creating a grammatically sound sentence.
The correct option removes the punctuation between 'climatologists' and the subordinating conjunction 'because', thereby integrating the dependent clause into the main clause and correcting the sentence fragment. It also keeps 'This' as the start of the next independent clause, creating two complete, grammatical sentences.

Step-by-Step Solution

1
Analyze the underlined portion to identify if it contains a sentence fragment.
The clause starting with the subordinating conjunction 'Because' is a dependent clause punctuated as a complete sentence, which forms a fragment.
Identifying the error type helps narrow down the correct grammatical structure required.
2
Evaluate the proposed options to determine which one connects the dependent clause to the preceding independent clause or makes it complete.
The correct choice removes the punctuation after 'climatologists' to seamlessly attach the dependent clause, forming a single grammatically correct sentence.
Connecting a dependent clause to its main clause eliminates the fragment.
3
Check the remaining options for other grammatical errors, such as comma splices or semicolon errors.
The option with the semicolon creates a semicolon fragment error, and the option with the comma splice incorrectly joins two independent clauses without a coordinating conjunction.
Verifying the distractors ensures that the chosen option is the only grammatically correct selection.

Key Concept

Recognizing and correcting sentence fragments by properly connecting dependent clauses to independent clauses.
Question 133Question →

Complete the passage by entering the pronoun that correctly agrees with its antecedent under standard written English conventions.

Fill in the blanks below

While each of the newly established research laboratories in the biotechnology corridor boasts state-of-the-art gene-sequencing equipment, neither of the two facilities, despite receiving substantial initial funding from private investors, has yet finalized application for the federal development grant.
Show answer & explanation

Answer

its
The correct pronoun is 'its'. The subject of the main clause is the singular indefinite pronoun 'neither'. Even though it is followed by the plural prepositional phrase 'of the two facilities' and the parenthetical modifier 'despite receiving substantial initial funding from private investors', the antecedent remains singular. Therefore, it requires the singular possessive pronoun 'its' to maintain correct grammatical agreement.

Step-by-Step Solution

1
Locate the main clause and its grammatical subject.
The subject of the main clause is the indefinite pronoun 'neither'. The plural noun 'facilities' is contained within the modifying prepositional phrase 'of the two facilities' and is not the subject.
Identifying the true subject is critical because the possessive pronoun must agree with this antecedent in number.
2
Determine the grammatical number and person of the subject 'neither'.
Under the rules of standard written English, the indefinite pronoun 'neither' is singular. Because it refers to inanimate facilities, it is third-person and neuter.
Establishing the singular nature of 'neither' dictates that the corresponding pronoun must also be singular.
3
Determine the correct possessive pronoun form.
The singular neuter possessive pronoun 'its' is selected.
The singular possessive 'its' agrees with 'neither'. Using the plural 'their' creates a pronoun-antecedent agreement error.

Key Concept

Pronoun-Antecedent Agreement with Indefinite Pronouns
Question 134Question →

Read the sentence below and fill in the blank with the possessive pronoun that correctly agrees with its antecedent.

Fill in the blanks below

The lead archaeologist and the museum curator carefully unpacked the ancient artifacts to ensure that fragile surfaces remained undamaged.
Show answer & explanation

Answer

their
The pronoun refers back to the plural antecedent 'artifacts'. Therefore, the plural possessive pronoun 'their' is required to ensure correct pronoun-antecedent agreement.

Step-by-Step Solution

1
Identify the antecedent of the pronoun to be filled in the blank.
The antecedent is the plural noun 'artifacts'.
The pronoun modifies 'fragile surfaces', which belong to the 'artifacts'.
2
Determine the number of the antecedent.
The noun 'artifacts' is plural.
It refers to more than one historical object.
3
Select the correct plural possessive pronoun.
The plural possessive pronoun is 'their'.
Plural antecedents must be paired with plural pronouns to maintain correct pronoun-antecedent agreement.

Key Concept

Pronoun-Antecedent Agreement with Plural Nouns
Question 135Question →

The following passage is an excerpt from an essay about urban planning.

[1] The primary challenge facing the architectural firm was not the zoning restrictions or the budget limitations. But rather the community's resistance to the modern design, which many residents felt clashed with the historic character of the neighborhood. [2] In response, the lead architect proposed a series of public forums to address these concerns directly.

Which of the following options represents the most effective way to revise the underlined portion of the sentence to ensure that the passage is grammatically correct?

Show answer & explanation

Answer: limitations, but rather

Answer

limitations, but rather
The correct option resolves the sentence fragment by replacing the period with a comma. This joins the coordinating prepositional phrase ('but rather the community's resistance...') to the preceding independent clause, completing the parallel 'not... but rather' comparison within a single grammatically correct sentence.

Step-by-Step Solution

1
Analyze the underlined portion and the surrounding sentence structure.
The sentence ending in 'limitations' is complete, but the subsequent sentence beginning with 'But rather' lacks a subject and a finite verb, making it a sentence fragment.
To identify the grammatical error in the original passage.
2
Evaluate the relationship between the two parts of the sentence.
The passage presents a contrast using the correlative construction 'not [X] but rather [Y]', which requires the two elements to be contained within the same sentence.
To determine the appropriate grammatical connection between the contrasting elements.
3
Compare the punctuation options to connect the clauses correctly.
A comma is the correct punctuation mark to join these elements, whereas a semicolon would create a fragment and a period leaves the fragment unresolved.
To select the option that avoids both fragments and comma splices.

Key Concept

Sentence Fragments
Question 136Question →

The curators of the new exhibition decided that the gallery would not only feature paintings from the Renaissance period, but also it would showcase contemporary sculptures, and digital art installations were going to be displayed.

Which choice best maintains parallel structure in this sentence?

Show answer & explanation

Answer: but also showcase contemporary sculptures and display digital art installations

Answer

The choice that reads 'but also showcase contemporary sculptures and display digital art installations' is the correct answer.
The correct answer maintains parallel structure by ensuring that all three actions in the series follow the modal verb 'would' as base verbs ('feature,' 'showcase,' and 'display'). This creates a consistent and grammatically correct parallel sequence: 'would not only feature... but also showcase... and display...'

Step-by-Step Solution

1
Identify the initial parallel marker and its associated grammatical form.
The sentence begins a list of actions using 'would not only', followed by the base verb 'feature'.
Establishing the initial structure determines the grammatical form that the subsequent list items must match.
2
Locate the remaining components of the correlative and coordinate structures.
The correlative marker 'but also' and the coordinating conjunction 'and' introduce the second and third actions.
These conjunctions connect the parallel elements of the list together.
3
Choose the option that matches the base verb form of the first element.
The correct option must use the base verbs 'showcase' and 'display' to remain parallel to 'feature'.
Using the same grammatical form (base verbs following the modal verb 'would') ensures grammatical consistency and parallel structure.

Key Concept

Parallel Structure
Question 137Question →

After hours of deliberation, the manager and the supervisor finalized his decision regarding the new safety guidelines.

Which of the following is the correct choice for the underlined portion of the sentence?

Show answer & explanation

Answer: their

Answer

The pronoun must be changed to 'their' to agree in number with the plural compound antecedent 'the manager and the supervisor.'
The pronoun 'their' correctly agrees in number with the plural compound antecedent 'the manager and the supervisor' and functions as the possessive modifier for the noun 'decision.'

Step-by-Step Solution

1
Identify the antecedent of the pronoun.
The antecedent is the compound phrase 'the manager and the supervisor.'
To ensure correct agreement, the antecedent must be identified first.
2
Determine if the antecedent is singular or plural.
The compound antecedent consists of two nouns connected by 'and,' making it plural.
Nouns joined by 'and' form a plural subject.
3
Select the correct plural possessive pronoun that fits the sentence context.
The plural possessive pronoun 'their' is grammatically correct and fits the context.
This establishes proper pronoun-antecedent agreement in number.

Key Concept

Pronoun-Antecedent Agreement with Compound Antecedents
Estimated Time:45s
Question 138Question →

To prepare for the upcoming volcanic hazard assessment, the research team deployed several monitoring devices along the mountain's active ridge; however, neither the chief volcanologist nor the field technicians could explain why his equipment failed to record the seismic activity during the initial tremor.

Which of the following options correctly replaces the underlined pronoun to ensure proper grammatical agreement?

Show answer & explanation

Answer: their

Answer

The possessive plural pronoun 'their' is the correct choice to replace the underlined word because it agrees with the closer plural antecedent 'technicians' in the compound subject.
The correct option is the plural possessive pronoun 'their'. In sentences with compound antecedents joined by 'or' or 'nor', the pronoun must agree in number with the closer noun. Here, 'field technicians' is the closer noun and is plural, so the plural pronoun 'their' is grammatically correct.

Step-by-Step Solution

1
Identify the antecedent of the underlined pronoun.
The pronoun refers back to the compound antecedent 'neither the chief volcanologist nor the field technicians'.
To ensure pronoun-antecedent agreement, we must first locate the noun or nouns to which the pronoun refers.
2
Apply the grammatical rule for compound antecedents joined by 'or' or 'nor'.
Since the antecedents are joined by 'nor', the pronoun must agree in number with the closer noun, which is 'field technicians' (plural).
Standard English grammar dictates that when a singular and a plural noun are joined by 'or' or 'nor', the pronoun agrees with the noun that is physically closer to it.
3
Select the correct plural possessive pronoun from the choices.
The plural possessive pronoun is 'their'.
The sentence requires a possessive pronoun to modify 'equipment', and 'their' is the correct plural possessive form.

Key Concept

Pronoun-Antecedent Agreement with Compound Subjects
Question 139Question →

The team of marine biologists spent three months tracking the migration patterns of humpback whales. Having documented their behaviors with underwater cameras and acoustic sensors. They compiled the findings into a comprehensive study on ocean acoustics.

Which of the following choices is the most effective and grammatically correct replacement for the underlined portion?

Show answer & explanation

Answer: humpback whales, documenting their behaviors with underwater cameras and acoustic sensors before compiling

Answer

humpback whales, documenting their behaviors with underwater cameras and acoustic sensors before compiling
The correct choice seamlessly integrates the modifying phrases into the main sentence. By changing 'Having documented' to 'documenting' and connecting it with a comma, the sentence correctly presents the team's actions without fragments or comma splices.

Step-by-Step Solution

1
Identify the grammatical components of the original underlined portion.
The phrase 'Having documented their behaviors with underwater cameras and acoustic sensors' lacks both a subject and a conjugated verb that can stand alone.
To determine whether the original sentence contains a sentence fragment.
2
Analyze the relationship between the surrounding clauses.
The first part ('The team... humpback whales') and the last part ('compiled the findings...') are parts of a logical sequence that describe the biologists' actions.
To understand how the elements of the sentence should be joined.
3
Evaluate the incorrect options for errors such as punctuation misuse or comma splices.
Using a semicolon before 'having' is incorrect because it separates a phrase rather than an independent clause. Inserting 'they documented...' creates a comma splice by joining two independent clauses with only a comma.
To eliminate grammatically flawed distractors.
4
Verify that the chosen option creates a single, coherent, and grammatically complete sentence.
By using the participial modifiers 'documenting' and 'before compiling', the sentence smoothly connects all ideas into one main clause.
To ensure the final choice has no errors and flows naturally.

Key Concept

Sentence Fragments
Estimated Time:1m 30s
Question 140Question →

During the late Renaissance, a physician’s reputation depended not only on successfully treating wealthy patients and maintaining a clean laboratory, but also to publish scholarly treatises in Latin.

Which of the following choices best replaces the underlined portion of the sentence to maintain correct parallel structure?

Show answer & explanation

Answer: on publishing scholarly treatises in Latin

Answer

The correct answer is the option that completes the parallel structure with the prepositional phrase starting with 'on' followed by a gerund, ending with 'on publishing scholarly treatises in Latin'.
The correct option correctly uses the preposition 'on' followed by the gerund 'publishing' to match the grammatical structure established in the first part of the correlative conjunction ('depended not only on successfully treating...'). This maintains a parallel structure without introducing any grammatical errors.

Step-by-Step Solution

1
Analyze the sentence structure and identify the correlative conjunction pair.
The sentence uses the correlative conjunction 'not only... but also' to connect elements.
Correlative conjunctions must link grammatically parallel elements.
2
Identify the grammatical form of the first element linked by 'not only'.
The first element is 'on successfully treating wealthy patients and maintaining a clean laboratory', which consists of the preposition 'on' followed by two gerund phrases.
Understanding the first element's structure defines the required structure for the second parallel element.
3
Determine the correct parallel structure for the second element following 'but also'.
The second element must also begin with the preposition 'on' followed by a gerund phrase, resulting in 'on publishing scholarly treatises in Latin'.
This maintains the parallel prepositional structure ('depended not only on [gerunds]... but also on [gerund]').
4
Evaluate the options to ensure they do not introduce new grammatical errors.
The option containing 'this demonstrated' introduces an incorrect comma splice, while the option containing 'superior to their colleagues' creates an illogical comparison by comparing 'expertise' directly to 'colleagues'. The correct option maintains parallel structure without introducing other errors.
Evaluating all aspects of the options ensures the final choice is grammatically sound and correct.

Key Concept

Parallel structure requires that coordinate or correlative elements in a sentence share the same grammatical form.
Estimated Time:1m 15s
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