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Answer: ASet 2: Text Structure (Intermediate)
Explanation
PASSAGE
Renewable energy sources are infinite. Solar power, for example, comes from the sun, which will shine for billions of years. Fossil fuels, in contrast, take millions of years to form and are finite.
Which choice best describes the function of the third sentence?
A. It contrasts the renewable source mentioned with a non-renewable one.✓ Correct
B. It explains how the sun works.
C. It argues that we should use more oil.
D. It describes the formation of the earth.
Detailed Explanation
Sentence 2 uses Solar (infinite) ex. Sentence 3 uses Fossil Fuels (finite) to contrast.
Key Evidence:
• "in contrast"
• "finite"
Why others are wrong: B (No physics.), C (It highlights they run out.), D (No geology.).