10

Set 5: Form, Structure & Sense

Explanation

Answer: A

PASSAGE

The migration of monarch butterflies _______ thousands of miles and takes several generations to complete.

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

A. spans✓ Correct
B. spanned
C. span
D. spanning

Detailed Answer Explanation

This question tests your understanding of sentence function and text organization. 'The migration' is singular and requires the singular verb 'spans.' This describes a general fact about monarch butterfly migration. Each sentence in a well-constructed text serves a specific purpose. Consider what role this sentence plays in the argument: does it introduce, support, contrast, or conclude an idea? Understanding why an author includes specific sentences helps you grasp the overall argument. Each sentence should serve a clear purpose: introducing ideas, providing evidence, acknowledging counterarguments, or drawing conclusions. Identify the role to understand the structure.

Key Evidence:

• "The migration of monarch butterflies"

• "and takes several generations"

Why others are wrong: B ('Spanned' is past tense; the sentence describes an ongoing phenomenon with 'takes.'), C ('Span' is plural; 'migration' is singular.), D ('Spanning' is a participle; the sentence needs a main verb to match 'takes.').

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