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Difficulty: MediumVerb Tense and Consistency

Read the passage below.

In recent years, urban ecologists have been studying nocturnal bird migration through metropolitan corridors using specialized rooftop sensors. Whenever migrating flocks pass overhead, these sensitive devices recorded their vocalizations to analyze flight patterns. By evaluating the frequency of calls collected during peak seasons, researchers hope to propose safer building lighting policies.

Which choice best maintains a consistent verb tense throughout the paragraph?

  1. A
    NO CHANGE
  2. recordAnswer
  3. C
    will have recorded
  4. D
    records

Answer

The option 'record' maintains consistent present tense throughout the context and correctly agrees with the plural subject.
The option 'record' uses the simple present tense, which matches the present condition established by the clause 'Whenever migrating flocks pass overhead' and aligns with the present tense perspective of the passage ('hope'). Additionally, 'record' correctly agrees with the plural subject 'devices'.

Step-by-Step Solution

1
Identify the primary temporal context of the target sentence.
The dependent clause begins with 'Whenever migrating flocks pass overhead', establishing an ongoing general routine in the present tense.
Verb tense consistency requires main clause verbs to match the temporal framework established by dependent clauses unless a change in time frame is explicitly indicated.
2
Evaluate the subject-verb relationship of the underlined verb.
The subject is the plural noun phrase 'these sensitive devices'.
The correct verb form must be both grammatically present tense and plural.
3
Select the verb choice that fulfills both tense consistency and subject-verb agreement.
The base form 'record' is present tense and agrees in number with the plural subject 'devices'.
This maintains logical consistency with the present tense framework of the paragraph ('pass overhead', 'hope').

Key Concept

Verb Tense and Consistency
Estimated Time:1m 0s
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Topics

Verb Tense and Consistency

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