4

Set 4: Form, Structure & Sense (Advanced)

Explanation

Answer: B

PASSAGE

Contrary to the prevailing theory, which posits gradual evolutionary _______ the fossil evidence suggests rapid speciation events punctuating long periods of stasis.

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

A. change:
B. change,✓ Correct
C. change
D. change;

Detailed Answer Explanation

This question tests your understanding of sentence function and text organization. The phrase 'Contrary to the prevailing theory, which posits gradual evolutionary change' is introductory/contrasting. A comma closes it before the main clause 'the fossil evidence suggests.' 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:

• "Contrary to the prevailing theory, which posits"

• "the fossil evidence suggests"

Why others are wrong: A (A colon doesn't fit for transitioning from introductory phrase.), C (Missing punctuation fails to transition properly to main clause.), D (A semicolon is too strong; the first part isn't an independent clause.).