Set 5: Command of Evidence

Explanation

Answer: C

PASSAGE

Vaccines work by exposing the immune system to a weakened or inactive form of a pathogen. This allows the body to develop antibodies without suffering the disease. If the person later encounters the real pathogen, their immune system can respond quickly.

Why can vaccinated individuals respond quickly to real pathogens?

A. The vaccine cures the disease after infection.

B. Their immune system has already developed antibodies from the vaccine.

C. Vaccines contain live, fully active pathogens.✓ Correct

D. Vaccines eliminate all pathogens from the environment.

Detailed Explanation

This question requires you to identify evidence that supports a claim. The vaccine allows the body to 'develop antibodies.' Later, the immune system 'can respond quickly' because it already has these antibodies. 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:

• "develop antibodies"

• "respond quickly"

Why others are wrong: A (Vaccines PREVENT, not cure.), B (This option is incorrect.), D (Vaccines work on the body, not the environment.).

← Previous Next →