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 2: Form, Structure & Sense (Advanced)

Explanation

Answer: D

PASSAGE

Recent studies show that the ecosystem's resilience depends not only on species diversity but also on the complex interactions among species, each of which _______ a unique ecological role.

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

A. playing

B. have played

C. play

D. plays✓ Correct

Detailed Answer Explanation

[Variation 1] This question tests your understanding of sentence function and text organization. 'Each of which' is singular (each species plays a role). The relative pronoun 'which' refers to 'species,' but 'each' makes it singular. 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:

• "species...each of which"

• "a unique ecological role"

Why others are wrong: A ('Playing' is a participle; the relative clause needs a finite verb.), B ('Have played' is plural; 'each' is singular.), C ('Play' is plural; 'each' is singular.).

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