Set 4: Command of Evidence

Explanation

Answer: C

PASSAGE

Photosynthesis occurs in plant cells called chloroplasts. During this process, plants absorb carbon dioxide and water, use sunlight to convert them into glucose (sugar), and release oxygen as a byproduct. This is the foundation of most food chains on Earth.

According to the text, what is the role of sunlight in photosynthesis?

A. It is absorbed by the plant's roots.

B. It provides the energy to convert CO2 and water into glucose.

C. It is released as a byproduct.✓ Correct

D. It replaces oxygen in the atmosphere.

Detailed Explanation

This question requires you to identify evidence that supports a claim. The text states plants 'use sunlight to convert them [CO2 and water] into glucose.' Sunlight provides the energy. The best evidence directly and explicitly supports the stated claim without requiring assumptions. Match specific textual details or data points to the claim being made. The correct answer provides clear, direct support. Strong evidence directly addresses the claim without requiring additional interpretation. When evaluating options, look for quotes or data that explicitly support the statement. Weak evidence may be tangentially related but doesn't provide direct proof.

Key Evidence:

• "use sunlight to convert them into glucose"

Why others are wrong: A (Sunlight is absorbed by leaves/chloroplasts, not roots.), B (This option is incorrect.), D (Photosynthesis releases oxygen, doesn't replace it.).

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