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Question

Difficulty: MediumSubject-Verb Agreement

In the field of sociolinguistics, the detailed structural analysis of regional dialects—which often incorporates extensive phonetic recordings and demographic data collected from local communities—______ crucial insights into how pronunciation shifts propagate across geographical boundaries. By tracking these subtle variations, researchers can map the historical migrations of different populations and understand how social networks influence speech patterns.

Which choice completes the text so that it conforms to the conventions of Standard English?

  1. A
    provide
  2. B
    providing
  3. providesAnswer
  4. D
    have provided

Answer

provides
The singular verb 'provides' correctly agrees with the singular subject 'analysis'. The intervening prepositional phrase and relative clause contain plural nouns, but they do not alter the singular grammatical number of the subject.

Step-by-Step Solution

1
Identify the subject of the sentence.
The subject is 'the detailed structural analysis', which is singular.
Determining the correct grammatical number of the subject is required to apply the rule of subject-verb agreement.
2
Identify intervening phrases or clauses and isolate them.
The prepositional phrase 'of regional dialects' and the relative clause starting with 'which' modify the subject but do not change its singular number.
Isolating intervening elements prevents the common error of agreeing the verb with nearby plural nouns like 'dialects' or 'communities'.
3
Select the verb form that agrees with the singular subject in the present tense.
The verb 'provides' is singular and present tense, matching the rest of the passage.
The singular verb correctly pairs with the singular subject to complete the main clause.

Key Concept

Subject-Verb Agreement
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Topics

Subject-Verb Agreement

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