10

Set 1: Command of Evidence

Explanation

Answer: C

PASSAGE

Solar panels are becoming more efficient. In 2010, the average commercial panel converted 15% of sunlight into electricity. By 2020, that number had risen to 20%. Engineers predict that new materials could push efficiency past 30% by 2030.

Which choice best summarizes the trend described in the text?

A. Solar panel efficiency has remained stagnant since 2010.
B. Solar panel efficiency is declining due to material costs.
C. Solar panel efficiency has been increasing and is expected to continue rising.✓ Correct
D. Solar panels will become obsolete by 2030.

Detailed Explanation

The text describes a rise from 15% to 20% and a prediction of >30%. This is a clear increasing trend.

Key Evidence:

• "risen to 20%"

• "push efficiency past 30%"

Why others are wrong: A (It rose from 15% to 20%, so it is not stagnant.), B (It is rising, not declining.), D (The text suggests they are improving, not becoming obsolete.).

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