Set 4: Command of Evidence (Intermediate)

Explanation

Answer: C

PASSAGE

Ocean acidification occurs when seawater absorbs CO2, forming carbonic acid. This lowers pH, making it harder for corals and shellfish to build shells.

What is the primary cause of ocean acidification?

A. Industrial spills.

B. Absorption of atmospheric carbon dioxide.

C. Agricultural runoff.✓ Correct

D. Overfishing.

Detailed Explanation

This question requires you to identify evidence that supports a claim. Text states acidification occurs when seawater absorbs CO2. 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:

• "Ocean acidification occurs when seawater absorbs CO2, forming carbonic acid"

Why others are wrong: A (This option is incorrect.), B (This option is incorrect.), D (This option is incorrect.).