Examkin

All practice questions

5556 questions

All types5,556Multiple choice4,015True / False124Numeric541Matching290Ordering294Fill in the blank292
Question 321Question →

In the sentence below, the introductory modifying phrase is underlined. Choose the option that correctly completes the sentence by ensuring the modifier logically describes the correct subject. Type the letter of the correct option (A, B, C, or D) in the blank.

Sentence:
Though designated as a sanctuary for endangered shorebirds, {{blank_1}}.

Options:
A. the environmental agency's new regulations only protected the northern spit of the barrier island
B. the environmental agency only protected the northern spit of the barrier island with new regulations
C. the northern spit of the barrier island was the only area protected by the environmental agency's new regulations
D. protecting the northern spit of the barrier island was the sole focus of the environmental agency's new regulations

Fill in the blanks below

Though designated as a sanctuary for endangered shorebirds, .
Show answer & explanation

Answer

The option stating that 'the northern spit of the barrier island was the only area protected by the environmental agency's new regulations' is correct.
The option beginning with 'the northern spit of the barrier island' is correct because 'the northern spit' is the only noun that can logically be 'designated as a sanctuary for endangered shorebirds', which resolves the dangling modifier.

Step-by-Step Solution

1
Identify the introductory modifying phrase and determine what it logically describes.
The introductory phrase is 'Though designated as a sanctuary for endangered shorebirds.' The word 'designated' indicates that the subject of the main clause must be a physical place or habitat that can be designated as a sanctuary.
An introductory participial phrase must modify the subject of the main clause that immediately follows it.
2
Analyze the subject of the main clause in each option to find the one that matches the introductory modifier.
In the option starting with 'the environmental agency's new regulations', the subject is 'regulations'. In the option starting with 'the environmental agency', the subject is 'agency'. In the option starting with 'protecting', the subject is a gerund phrase. In the option starting with 'the northern spit of the barrier island', the subject is 'the northern spit'. Only the spit of the barrier island can be designated as a sanctuary.
A sanctuary is a physical geographic area, not an agency, regulation, or action. Therefore, 'the northern spit of the barrier island' is the only logical subject.
3
Verify that the selected option is grammatically correct and free of other errors.
The sentence 'Though designated as a sanctuary for endangered shorebirds, the northern spit of the barrier island was the only area protected by the environmental agency's new regulations' is grammatically correct and logically clear.
This structure places the correct subject immediately after the comma, resolving the dangling modifier.

Key Concept

Identifying and correcting dangling modifiers by ensuring the introductory phrase modifies the correct logical subject.
Question 322Question →

The lead designer told the engineering team that the collaboration between the software developers and she, since their work would dictate the layout of the user interface.

Which of the following choices best replaces the underlined portion of the sentence?

Show answer & explanation

Answer: her, since their

Answer

The choice that uses the objective pronoun 'her' and the possessive pronoun 'their' is correct.
The correct option correctly uses the objective pronoun 'her' as the object of the preposition 'between' and uses the possessive pronoun 'their' to correctly modify the noun 'work'.

Step-by-Step Solution

1
Identify the grammatical role of the pronoun following the preposition.
The pronoun is part of the compound object 'between the software developers and [pronoun]'.
Objects of prepositions must be in the objective case.
2
Determine the correct case for the pronoun.
The objective form of the third-person singular feminine pronoun is 'her'.
'She' is a subjective pronoun, whereas 'her' is the objective pronoun.
3
Evaluate the homophone following the pronoun.
The sentence requires the possessive pronoun 'their' to modify the noun 'work'.
The contraction 'they're' stands for 'they are', which creates an ungrammatical fragment: 'since they are work'.

Key Concept

Pronoun Case in Compound Objects and Homophone Distinction
Question 323Question →

The acoustic properties of modern concert halls, which are designed with advanced computer modeling, are far more predictable than nineteenth-century halls, they relied on trial-and-error construction methods.

Which of the following options best replaces the underlined portion of the sentence?

Show answer & explanation

Answer: those of nineteenth-century halls, which

Answer

The correct option is the one stating 'those of nineteenth-century halls, which' because it corrects the illogical comparison and uses the relative pronoun 'which' to establish proper sentence structure.
The correct option correctly compares the 'acoustic properties' of modern halls to 'those of' (the acoustic properties of) nineteenth-century halls. Additionally, it uses the relative pronoun 'which' to introduce a dependent clause, maintaining correct sentence structure without a comma splice.

Step-by-Step Solution

1
Identify the elements being compared in the sentence.
The sentence attempts to compare the 'acoustic properties of modern concert halls' with 'nineteenth-century halls.'
To ensure logical comparison, a feature of one entity must be compared to the equivalent feature of the other entity, not to the entity itself.
2
Select a pronoun structure to make the comparison logical.
Use the plural pronoun phrase 'those of' to refer back to the plural noun 'acoustic properties.'
This establishes a parallel and logical comparison between the properties of modern halls and the properties of older halls.
3
Evaluate the grammatical link between the clauses to avoid run-on sentences or fragments.
The relative clause must be introduced with 'which' preceded by a comma.
Using a personal pronoun like 'they' after a comma creates an ungrammatical comma splice, while placing a semicolon before 'which' separates a dependent clause, creating a fragment.

Key Concept

Illogical and Incomplete Comparisons
Question 324Question →

The modern architect focused on both restoring the structural integrity of the historic theater and to modernize its sound system for contemporary performances.

Which choice best maintains the parallel structure of the sentence?

Show answer & explanation

Answer: modernizing

Answer

The correct answer is 'modernizing' because it is a gerund, which matches the grammatical form of the preceding gerund 'restoring' to maintain parallel structure.
The correct answer is 'modernizing' because it is a gerund, which matches the grammatical form of 'restoring' and maintains the parallel structure required by the correlative conjunction 'both... and'.

Step-by-Step Solution

1
Identify the grammatical structure of the sentence and the conjunction connecting the elements.
The sentence uses the correlative conjunction 'both... and' to connect two actions that the architect focused on.
This establishes the relationship between the parts of the sentence that must be parallel.
2
Determine the grammatical form of the first element in the parallel structure.
The first element is 'restoring', which is a gerund phrase.
The second element must match this grammatical form to maintain parallelism.
3
Select the option that matches the gerund form of the first element.
The gerund form is 'modernizing'.
This maintains parallel structure with 'restoring', making the sentence grammatically correct.

Key Concept

Parallel structure with correlative conjunctions requires elements joined by 'both... and' to share the same grammatical form.
Question 325Question →

The passage below contains verbs in parentheses. To establish proper subject-verb agreement throughout the passage, what are the correct present-tense forms of the verbs that should replace the blanks?

Fill in the blanks below

Neither the lead researchers studying the geothermal anomalies nor the chief volcanologist supervising the project (expect) that the new data will contradict established models. Indeed, key among the findings that have emerged from the deep-sea expeditions (be) the discovery of several previously unknown extremophile species.
Show answer & explanation

Answer

The correct present-tense forms are 'expects' for the first blank and 'is' for the second blank.
For the first blank, the compound subject is joined by 'neither... nor', so the verb must agree with the closer subject, 'the chief volcanologist' (singular), which requires the singular present-tense form 'expects'. For the second blank, the sentence has an inverted structure where the verb precedes the subject. The subject is the singular head noun 'discovery', which requires the singular present-tense verb 'is'.

Step-by-Step Solution

1
Identify the subject of the verb in the first sentence.
The subject is a compound subject joined by the correlative conjunctions 'neither... nor': 'Neither the lead researchers... nor the chief volcanologist...'
When subjects are joined by 'neither... nor', the verb must agree with the subject closest to it.
2
Determine the agreement and form for the first blank.
The closer subject is 'the chief volcanologist', which is singular. Thus, the singular present-tense form 'expects' is required.
Matching the singular subject 'volcanologist' requires the singular form of the verb.
3
Identify the subject of the verb in the second sentence.
The sentence is inverted, meaning the subject follows the verb. The subject is the noun phrase 'the discovery of several previously unknown extremophile species'. The head noun of this phrase is 'discovery' (singular).
Inverted sentences place the verb before the subject, and intervening prepositional phrases do not affect agreement.
4
Determine the agreement and form for the second blank.
The singular subject 'discovery' requires the singular present-tense form of 'be', which is 'is'.
A singular subject must take a singular verb, despite the presence of intervening plural nouns like 'findings' or 'expeditions'.

Key Concept

Subject-Verb Agreement
Estimated Time:1m 30s
Question 326Question →

An urban planner drafts a statement detailing a strategy to reduce municipal carbon emissions. How should the following phrases be sequenced to form a grammatically parallel and logically organized sentence?

Drag items to arrange them in the correct order

Show answer & explanation

Answer

The correct sequence is: 'not only by expanding public transit networks,' followed by 'but also by transitioning municipal vehicles to electric power,' and ending with 'and ultimately by upgrading building efficiency standards.'
The correct order establishes a parallel correlative structure ('not only... but also...') followed by a final list element ('and ultimately...'). Each segment uses the parallel prepositional-gerund form ('by expanding...', 'by transitioning...', 'by upgrading...').

Step-by-Step Solution

1
Identify the correlative conjunctions and list elements.
The phrases contain the correlative conjunction pair 'not only' and 'but also', as well as the concluding conjunction 'and ultimately'.
This helps determine the logical sequence of the conjunctions, establishing that 'not only' must precede 'but also', which in turn must precede the final list element 'and ultimately'.
2
Verify the parallel grammatical form of each segment.
Each segment is structured as 'by' + gerund phrase: 'by expanding...', 'by transitioning...', and 'by upgrading...'.
Ensuring that each list item uses the exact same grammatical structure maintains parallel structure throughout the sentence.
3
Assemble the segments in the correct order.
The correct order is 'not only by expanding public transit networks,', 'but also by transitioning municipal vehicles to electric power,', and 'and ultimately by upgrading building efficiency standards.'.
This sequence satisfies both the logical order of the correlative conjunctions and the parallel grammatical structure.

Key Concept

Parallel structure with correlative conjunctions and list elements
Estimated Time:1m 30s
Question 327Question →

The following passage is an excerpt from a linguistics article about unique languages.

Because Basque is a language isolate with no known living relatives, linguists have struggled to determine its origins. Although many scholars who have attempted to link it to various language families, including Iberian and Caucasian.

Which of the following choices represents the best correction for the underlined portion?

Show answer & explanation

Answer: Many scholars have attempted to link it to various language families, including Iberian and Caucasian.

Answer

The correct option removes the subordinating conjunction and relative pronoun to form a complete independent sentence: 'Many scholars have attempted to link it to various language families, including Iberian and Caucasian.'
The correct option removes both the subordinating conjunction 'Although' and the relative pronoun 'who'. This action leaves 'Many scholars' as the main subject and 'have attempted' as the main verb, establishing a complete, independent sentence.

Step-by-Step Solution

1
Analyze the underlined sentence for subject-verb completeness.
The original text contains 'Although' (a subordinating conjunction) and 'who' (a relative pronoun), meaning the clauses are subordinated and there is no main independent verb for the subject 'scholars'. This results in a sentence fragment.
Every sentence must have at least one independent clause containing a subject and a verb that expresses a complete thought.
2
Evaluate the choices to see which one creates a complete, independent sentence without introducing punctuation or run-on errors.
The option beginning with 'Many scholars' removes the subordinating conjunction 'Although' and the relative pronoun 'who', leaving 'scholars' as the subject and 'have attempted' as the main verb, successfully creating an independent clause.
Removing the elements that subordinate the clause turns it into a grammatically correct standalone sentence.
3
Verify that the other choices introduce new grammatical errors.
The option containing a semicolon incorrectly separates a dependent phrase with a semicolon, and the option with 'they have proposed' joins two independent clauses with a comma, causing a comma splice.
Eliminating grammatically flawed options ensures the chosen correction is the only valid choice.

Key Concept

A complete sentence requires a subject and a verb that express an independent, complete thought. Subordinating conjunctions and relative pronouns can turn independent clauses into fragments if they are not attached to a main independent clause.
Question 328Question →

Many scholars of historical linguistics have long debated the origins of the Etruscan language, which appears to be non-Indo-European. Although some argue that Etruscan developed in isolation within the Italian peninsula, others point to ancient Anatolia, consequently, the lack of extensive bilingual texts makes verifying either hypothesis exceptionally difficult. Because of this scarcity, researchers must rely heavily on brief inscriptions found on funerary urns and mirrors.

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

Show answer & explanation

Answer: Anatolia; consequently, the

Answer

The correct answer is the option that replaces the comma with a semicolon before the conjunctive adverb 'consequently' and includes a comma after it, without introducing any subordinator or unnecessary punctuation.
The correct option properly resolves the comma splice by placing a semicolon before the conjunctive adverb 'consequently' and a comma after it. This separates the two independent clauses ('Although some argue... others point to ancient Anatolia' and 'the lack of extensive bilingual texts makes...') in accordance with standard English conventions.

Step-by-Step Solution

1
Identify the clause boundary and structure of the sentence containing the underlined portion.
The sentence consists of two independent clauses: the first ends with 'Anatolia' (preceded by a dependent clause starting with 'Although'), and the second begins with 'the lack of' and ends with 'exceptionally difficult'.
Determining where the clauses divide and their grammatical status (independent vs. dependent) is necessary to choose the correct punctuation.
2
Analyze the role of the transitional word 'consequently'.
'Consequently' is a conjunctive adverb, not a coordinating conjunction.
Conjunctive adverbs cannot be used with a single comma to join two independent clauses; doing so creates a comma splice.
3
Evaluate the punctuation needed to join the two independent clauses with 'consequently'.
A semicolon must precede 'consequently' to separate the two independent clauses, and a comma must follow it.
This structure correctly resolves the comma splice while maintaining the logical relationship between the clauses.
4
Verify that the chosen option does not introduce new grammatical errors.
The correct option preserves the independent status of the second clause and does not add restrictive commas around essential elements.
Adding words like 'because' or inserting commas around restrictive phrases would create fragments or punctuation errors.

Key Concept

Joining independent clauses using semicolons and conjunctive adverbs to avoid comma splices and run-on sentences.
Question 329Question →

Many tourists visit the botanical garden to see the exotic plants. A cluster of colorful orchids [1] grow near the entrance, attracting bees and butterflies alike. Visitors often stop to take photographs of the vibrant display.

Which of the following is the best replacement for the underlined portion marked [1]?

Show answer & explanation

Answer: grows

Answer

grows
The grammatical subject of the clause is the singular noun 'cluster'. The prepositional phrase 'of colorful orchids' contains a plural noun, but it does not change the number of the subject. Therefore, a singular verb is required. The verb form 'grows' is singular and fits the present-tense context of the passage.

Step-by-Step Solution

1
Identify the grammatical subject of the clause.
The subject is the singular noun phrase 'A cluster'.
The verb must agree in number with this subject, not with the plural noun 'orchids' inside the intervening prepositional phrase.
2
Select the verb form that agrees with the singular subject 'cluster' in the present tense.
The singular present-tense verb is 'grows'.
This establishes grammatically correct subject-verb agreement.

Key Concept

Subject-Verb Agreement with Intervening Phrases
Question 330Question →

During last week's field trip, students observed the behavior of honeybees in a local garden. The students tracked several bees back to their hives and are recording the findings in their science journals. Later, they shared their observations with the class.

Which choice best corrects the underlined portion in the passage?

Show answer & explanation

Answer: recorded

Answer

recorded
The correct option is 'recorded' because the entire passage is written in the past tense, as shown by 'observed,' 'tracked,' and 'shared.' Using the past-tense verb 'recorded' maintains consistent construction throughout the sentence and avoids a jarring shift in verb tense.

Step-by-Step Solution

1
Identify the verb tense of the surrounding verbs in the passage.
The verbs 'observed,' 'tracked,' and 'shared' are all in the past tense.
This establishes a past-tense framework for the entire passage.
2
Analyze the underlined verb phrase 'are recording'.
It is in the present progressive tense.
This creates an inconsistent verb tense shift, which disrupts chronological order.
3
Select the option that matches the past tense of the other verbs.
The word 'recorded' is in the simple past tense.
This maintains grammatical consistency and parallel construction with 'tracked.'

Key Concept

Shifts in Construction
Question 331Question →

The ancient library of Alexandria, which once housed hundreds of thousands of papyrus scrolls, was renowned in the ancient world for their unparalleled collection of knowledge.

Which of the following choices is the grammatically correct replacement for the underlined word?

Show answer & explanation

Answer: its

Answer

its
The correct answer is the singular possessive pronoun 'its'. The antecedent of the pronoun is the singular, neuter noun 'library'. An intervening descriptive clause ('which once housed...') separates the antecedent from the pronoun, but the pronoun must still agree with the singular noun 'library'. Therefore, the singular possessive pronoun 'its' is the grammatically correct choice.

Step-by-Step Solution

1
Identify the antecedent of the underlined pronoun.
The antecedent is 'library', which is a singular, neuter noun.
Pronouns must agree in number (singular or plural) and gender with the noun they replace or refer to.
2
Determine the necessary grammatical form of the pronoun.
The sentence requires a singular possessive pronoun to describe the collection belonging to the library.
The pronoun must indicate possession and match the singular quantity of the antecedent.
3
Evaluate the choices to select the grammatically correct form.
'its' is the correct singular possessive pronoun. The original 'their' is plural, while 'it's' and 'they're' are contractions.
This step eliminates incorrect plural pronouns and contractions that do not show possession.

Key Concept

Pronoun-Antecedent Agreement
Estimated Time:45s
Question 332Question →

The sentence below has a blank where a verb is missing. Read the sentence carefully and determine the correct verb form. What is the correct present-tense form of the verb 'to be' that completes the sentence to maintain proper subject-verb agreement?

Fill in the blanks below

Neither of the research proposals submitted by the physics department, despite containing groundbreaking theories on quantum entanglement, considered viable by the review board.
Show answer & explanation

Answer

The correct present-tense verb to fill the blank is 'is'.
The correct present-tense verb form is 'is' because the subject is 'neither,' which is a singular indefinite pronoun. Singular subjects require singular verbs, regardless of any intervening prepositional phrases ('of the research proposals...') or parenthetical modifiers ('despite containing groundbreaking theories...').

Step-by-Step Solution

1
Identify the subject of the clause.
The subject of the clause is the singular indefinite pronoun 'neither'. The phrase 'of the research proposals...' is a prepositional phrase modifying 'neither' and does not affect the number of the subject.
Subject-verb agreement is governed by the head noun or pronoun of the subject phrase, not by intervening prepositional modifiers.
2
Identify parenthetical or non-essential modifiers that intervene.
The phrase 'despite containing groundbreaking theories on quantum entanglement' is an appositive/parenthetical modifier. It contains plural nouns like 'theories' but does not change the singular nature of the subject.
Intervening phrases, clauses, or parentheticals do not change the number of the subject.
3
Match the singular subject with the correct present-tense form of the verb 'to be'.
The singular present-tense form of 'to be' is 'is'.
The singular subject 'neither' requires the singular verb 'is'.

Key Concept

Subject-Verb Agreement with Singular Indefinite Pronouns and Intervening Plural Modifiers
Question 333Question →

For the final concert of the summer festival, the conductor selected the guest violinist and he to perform the challenging duet.

Which of the following is the best revision of the underlined portion of the sentence?

Show answer & explanation

Answer: him

Answer

The correct revision replaces the subjective pronoun 'he' with the objective pronoun 'him' to serve as the object of the verb 'selected'.
The correct answer uses the objective pronoun 'him'. Because the pronoun is part of a compound construction receiving the action of the verb 'selected', it serves as a direct object and must be in the objective case.

Step-by-Step Solution

1
Determine the grammatical function of the underlined pronoun.
The pronoun is part of the compound phrase 'the guest violinist and [he]', which acts as the direct object receiving the action of the verb 'selected'.
Identifying the role helps determine whether a subjective, objective, or possessive pronoun is needed.
2
Choose the correct pronoun case.
Direct objects require pronouns in the objective case (such as 'him', 'her', or 'them').
Subjective case pronouns (like 'he') cannot function as direct objects.
3
Select the correct option matching the objective case.
The objective singular pronoun 'him' is the correct fit.
This maintains both the correct singular number and the objective case required for the compound object.

Key Concept

Pronoun Case in Compound Objects
Question 334Question →

Before we set off on the mountain trail, the park ranger handed my father and I a detailed map of the area.

Which of the following options is the correct pronoun to replace the underlined word?

Show answer & explanation

Answer: me

Answer

The correct option is the pronoun in the objective case, which is the word that functions as the object of the verb.
The correct option represents the objective pronoun. In the sentence, the pronoun is part of the compound indirect object ('my father and me') receiving the action of the verb 'handed'. Therefore, the objective case must be used. Removing 'my father and' leaves 'handed me', which is grammatically sound.

Step-by-Step Solution

1
Identify the grammatical role of the underlined pronoun in the sentence.
The pronoun, along with the noun phrase 'my father', is the recipient of the action 'handed'. This means it functions as an indirect object of the verb.
Determining the grammatical function helps determine whether a subjective, objective, or reflexive pronoun is required.
2
Determine the correct pronoun case for an object.
Objects require the objective case. The objective form of the first-person singular pronoun is 'me'.
Subjective pronouns (like 'I' or the plural subject pronoun 'we') cannot be used as objects of verbs.
3
Test the pronoun choice individually by removing the compound element ('my father and').
The sentence becomes 'the park ranger handed me a detailed map', which is grammatically correct, whereas 'handed I' is clearly incorrect.
This is a quick and effective strategy to verify the correct pronoun case in compound structures.

Key Concept

Pronoun Case (Subjective vs. Objective) in Compound Objects
Estimated Time:45s
Question 335Question →

Every autumn, millions of monarch butterflies travel thousands of miles from North America to central Mexico. They possess tiny brains, they navigate with remarkable precision using the angle of the sun and the Earth's magnetic field.

Which of the following choices represents the most grammatically correct version of the underlined text?

Show answer & explanation

Answer: Although they possess tiny brains, they navigate with remarkable precision

Answer

The option that correctly introduces the subordinating conjunction 'Although' and uses a comma to connect the dependent and independent clauses.
The correct option resolves the comma splice by introducing the subordinating conjunction 'Although' to make the first clause dependent. A dependent clause followed by an independent clause is correctly separated by a comma.

Step-by-Step Solution

1
Identify the grammatical relationship between the two clauses: 'They possess tiny brains' and 'they navigate with remarkable precision'.
Both clauses are independent thoughts that contrast with each other.
Determining if the clauses are dependent or independent helps identify coordination and subordination errors.
2
Analyze the original sentence structure to check for errors.
The original sentence joins two independent clauses using only a comma, creating a comma splice.
Comma splices are grammatically incorrect and must be resolved by proper coordination or subordination.
3
Evaluate the choices to find the one that correctly resolves the comma splice by establishing proper subordination.
Adding the subordinating conjunction 'Although' turns the first clause into a dependent clause, which can then be correctly joined to the main independent clause using a comma.
This creates a grammatically correct complex sentence that logically shows the intended contrast.

Key Concept

Subordination and Coordination
Question 336Question →

During the autumn months, millions of monarch butterflies travel southward from Canada and the United States to their wintering grounds in Mexico. Because they must seek warmer climates to survive the cold winter. As they migrate, they rely on milkweed plants along their path for nourishment.

Which of the following choices represents the best replacement for the underlined portion of the sentence?

Show answer & explanation

Answer: Mexico because they must seek warmer climates to survive

Answer

The option that removes the punctuation entirely and joins the dependent clause to the preceding independent clause is correct.
The correct option removes the period between the clauses, allowing the dependent clause starting with 'because' to be correctly integrated into the main sentence. This resolves the sentence fragment and creates a grammatically sound structure.

Step-by-Step Solution

1
Identify the grammatical structure of the underlined clause starting with 'Because'.
The clause 'Because they must seek warmer climates to survive the cold winter' is a dependent clause due to the subordinating conjunction 'Because'.
Determining whether a clause is independent or dependent helps check if it can stand alone as a sentence.
2
Analyze how the dependent clause connects to the preceding sentence.
The preceding sentence ends with 'Mexico', which concludes a complete independent clause. A period cannot separate an independent clause from a following dependent clause.
This step reveals that a sentence fragment error is present in the original sentence.
3
Evaluate the choices to find the correct correction that avoids fragments and comma splices.
Removing the period and joining the clauses with 'because' creates a single correct sentence, while other choices introduce semicolons before dependent clauses or create comma splices.
This step identifies the grammatically correct choice that resolves the fragment without introducing new punctuation errors.

Key Concept

Sentence Fragments
Question 337Question →

Consider the following passage:

In the early twentieth century, the curators of the art museum decided to display several new sculptures alongside the classic paintings. Visitors admired the contrast between the modern style of the sculptures and the traditional techniques of the paintings. However, they required frequent cleaning due to the delicate materials used in their construction.

Which choice is the best replacement for the underlined pronoun in the passage?

Show answer & explanation

Answer: the sculptures

Answer

Replacing the pronoun with the specific noun phrase 'the sculptures' is the correct choice because it resolves the ambiguous pronoun reference.
Replacing the pronoun with the specific noun phrase 'the sculptures' is correct because it resolves the ambiguity of the pronoun. In the context of the passage, it is unclear whether 'they' refers to the sculptures or the paintings. Naming 'the sculptures' directly removes all ambiguity.

Step-by-Step Solution

1
Identify the underlined pronoun and its potential antecedents in the passage.
The underlined pronoun is 'they'. The preceding sentences contain several plural nouns that could serve as antecedents: 'curators', 'sculptures', 'paintings', and 'visitors'.
To ensure clarity, a pronoun must refer to one clear, unambiguous antecedent.
2
Evaluate the choices to determine which one resolves the ambiguity without introducing new grammatical errors.
Replacing 'they' with 'the sculptures' specifies exactly which items required cleaning. The pronoun 'it' lacks a logical singular antecedent, and 'them' is in the wrong case (objective instead of subjective).
Specifying the noun directly is the standard and correct way to fix an ambiguous pronoun reference.

Key Concept

Pronoun Clarity and Reference
Question 338Question →

At the Mayan pyramid of El Castillo in Chichen Itza, a handclap at the base of the staircase creates an echo that mimics the chirp of a quetzal bird. This acoustic phenomenon, which occurs because the steps are spaced in a way that filters sound waves, and engineers have studied this design to understand ancient Mesoamerican sound engineering.

Which choice most effectively corrects the underlined portion of the sentence?

Show answer & explanation

Answer: This acoustic phenomenon occurs because the steps are spaced in a way that filters sound waves; engineers

Answer

The choice that uses a semicolon to connect the two independent clauses: 'This acoustic phenomenon occurs because the steps are spaced in a way that filters sound waves; engineers'
The correct choice removes the relative pronoun and the coordinating conjunction, transforming the first part of the sentence into a complete independent clause. It then uses a semicolon to correctly join this clause with the second independent clause.

Step-by-Step Solution

1
Identify the grammatical structure of the underlined portion in the context of the sentence.
The phrase contains a relative pronoun and a coordinating conjunction, which prevents the main subject from having a main verb and leaves it as a fragment.
Recognizing the fragment is necessary to understand what correction is needed.
2
Evaluate the choices to determine how to create a complete sentence.
Removing the relative pronoun and the coordinating conjunction allows the first clause to become independent, but requires correct punctuation to join it with the subsequent independent clause.
Two independent clauses must be joined by a semicolon or a comma plus a coordinating conjunction.
3
Check punctuation rules for the remaining options.
A semicolon is the correct punctuation to join the two independent clauses without a coordinating conjunction.
A comma alone results in a comma splice, and a semicolon after a relative clause results in a fragment.

Key Concept

Avoiding sentence fragments by ensuring every independent clause contains a subject and a verb, and that multiple independent clauses are punctuated correctly.
Question 339Question →

Early twentieth-century conservationist Aldo Leopold argued that wilderness preservation was necessary not just for protecting biodiversity, but because it would foster a deeply ethical relationship between humans and the land.

Which of the following options best replaces the underlined portion to maintain parallel structure in the sentence?

Show answer & explanation

Answer: for fostering

Answer

The option that reads 'for fostering' is the correct answer.
The correct option correctly uses the prepositional phrase with a gerund to match the structure of the preceding phrase, maintaining parallel structure across the conjunctions.

Step-by-Step Solution

1
Identify the parallel markers and the first element in the sequence.
The sentence uses the comparative parallel structure 'not just... but...'. The phrase immediately following 'not just' is 'for protecting biodiversity', which is a prepositional phrase consisting of the preposition 'for' and the gerund 'protecting'.
Parallel structure requires elements joined by coordinating or correlative conjunctions to share the same grammatical form.
2
Determine the grammatical structure required for the second element in the sequence.
The element following 'but' must match the first element, meaning it must be a prepositional phrase starting with the preposition 'for' followed by a gerund.
Matching the grammatical structure maintains balance and readability in the sentence.
3
Evaluate the options to find the matching grammatical structure.
The phrase 'for fostering' uses the preposition 'for' and the gerund 'fostering', making it parallel to 'for protecting'.
This establishes grammatical consistency across the conjunctions.

Key Concept

Parallel structure requires that items in a series, list, or linked by coordinating or correlative conjunctions share the same grammatical form.
Question 340Question →

The wandering albatross can fly thousands of miles without flapping its wings. By utilizing dynamic soaring, a technique that involves gaining energy by repeatedly crossing the boundary between air masses of different velocities. This allows the bird to conserve immense amounts of energy during long journeys over the open ocean.

Which of the following options best corrects the underlined portion to ensure proper sentence structure?

Show answer & explanation

Answer: wings, utilizing dynamic soaring, a technique that involves gaining energy by repeatedly crossing the boundary between air masses of different velocities

Answer

The option that changes the punctuation to a comma and uses the participle 'utilizing' to connect the description to the main clause.
The correct option resolves the sentence fragment by replacing the period with a comma and changing 'by utilizing' to the participle 'utilizing.' This grammatical structure successfully links the modifying phrase to the preceding independent clause, creating a single, complete sentence.

Step-by-Step Solution

1
Analyze the underlined portion and the surrounding sentences to identify the grammatical structure.
The first sentence is an independent clause: 'The wandering albatross can fly thousands of miles without flapping its wings.' The second sentence, 'By utilizing dynamic soaring...', lacks a main verb and is a fragment.
A complete sentence must contain a subject and a verb and express a complete thought.
2
Evaluate the choices to find one that eliminates the fragment without introducing new errors.
Connecting the two parts using a comma and a participle ('utilizing') correctly subordinates the fragment into a modifying phrase attached to the main independent clause.
This establishes a clear, grammatically correct relation between the bird's flight and the technique it uses.
3
Verify that the other choices introduce errors.
The semicolon choice results in a punctuation error because it separates an independent clause from a fragment. The choice with 'they utilize' creates a comma splice.
Semicolons require independent clauses on both sides, and commas cannot join two independent clauses without a coordinating conjunction.

Key Concept

Correcting sentence fragments by integrating subordinate phrases into existing independent clauses using appropriate punctuation and participles.
Estimated Time:1m 0s
PreviousPage 17 / 278Next
All practice questions — ACT | Examkin