How should I approach this reading question type?

First, identify the core claim of the text. Look for transition words like 'however' or 'furthermore' which signal changes in the author's logic. Then, match the evidence directly to the options provided.

What is the common trap in wrong answers for this category?

The most common trap is 'extreme language' (e.g., 'always', 'never') or 'unsupported inferences' that go beyond what is explicitly stated in the provided text snippet.

Why is the correct answer better than the close alternatives?

The correct answer usually captures the most direct and necessary evidence from the text, whereas alternatives often focus on minor details or distort the author's primary subject.

Set 9: Form, Structure & Sense (Advanced)

Explanation

Answer: B

PASSAGE

Recent studies show that marine biologists have observed that coral reefs, once thought to be _______ are actually dynamic ecosystems capable of significant adaptation.

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

A. static:

B. static,✓ Correct

C. static;

D. static

Detailed Answer Explanation

[Variation 1] This question tests your understanding of sentence function and text organization. The phrase 'once thought to be static' is a parenthetical interruption. It needs a closing comma before 'are actually' to properly resume the main clause. 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:

• "coral reefs, once thought to be"

• "are actually dynamic ecosystems"

Why others are wrong: C (A semicolon is too strong for closing a parenthetical phrase.), A (A colon doesn't fit here; this is resuming the main clause.), D (Missing punctuation fails to close the parenthetical phrase.).

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