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Set 4: Command of Evidence

Explanation

Answer: C

PASSAGE

Venus is often called Earth's 'twin' because of its similar size and mass. However, conditions on Venus are extremely hostile: surface temperatures average 465°C (hot enough to melt lead), and the atmosphere is 96% carbon dioxide with clouds of sulfuric acid.

Why is calling Venus Earth's 'twin' potentially misleading?

A. Venus is actually much larger than Earth.
B. Despite similar size, the environmental conditions are vastly different.
C. Venus has the same atmosphere as Earth.✓ Correct
D. Venus is located closer to the sun than Mercury.

Detailed Explanation

The 'twin' label is based on 'similar size and mass,' but the text contrasts this with 'extremely hostile' conditions. The environments are different despite similar physical dimensions.

Key Evidence:

• "similar size and mass"

• "extremely hostile"

Why others are wrong: A (They are similar in size.), C (Venus is 96% CO2; Earth is not.), D (Not stated; Venus is second from the sun.).

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