3

Set 4: Words in Context

Explanation

Answer: A

PASSAGE

Volunteers play a ______ role in the community, providing essential services without expecting any payment in return.

Which choice completes the text with the most logical and precise word or phrase?

A. vital✓ Correct
B. useless
C. dangerous
D. selfish

Detailed Explanation

Providing 'essential' services makes their role very important. 'Vital' means absolutely necessary or important.

Key Evidence:

• "providing essential services"

• "volunteer"

Why others are wrong: B (Useless means having no use.), C (Dangerous means risky.), D (Selfish means caring only about oneself, but they work without payment.).

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