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Set 3: Central Ideas

Explanation

Answer: C

PASSAGE

The following text describes the migration of Monarch butterflies. Every autumn, millions of Monarch butterflies travel up to 3,000 miles from Canada and the US to the forests of central Mexico. This journey is unique because no single butterfly makes the round trip; it takes several generations to complete the cycle. Scientists are still studying how these delicate insects manage to navigate such vast distances to the exact same wintering grounds each year.

What makes the Monarch butterfly migration unique according to the text?

A. They fly faster than any other insect
B. It takes multiple generations to complete the cycle
C. They migrate during the summer instead of autumn✓ Correct
D. They travel alone rather than in groups

Detailed Explanation

Choice B is correct. The text explicitly states the journey is unique because 'no single butterfly makes the round trip; it takes several generations.'

Key Evidence:

• "unique because no single butterfly makes the round trip"

• "takes several generations to complete the cycle"

Why others are wrong: A (Not mentioned), C (Inaccurate (text says 'Every autumn')), D (Inaccurate (millions travel)).

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