1

Set 2: Cross-Text Connections

Explanation

Answer: A

PASSAGE

Text 1 Vaccines work by introducing a harmless piece of a pathogen to the immune system. This trains the body to recognize and fight the real pathogen if exposed later, providing immunity without causing the disease. Text 2 Herd immunity occurs when a large percentage of a population is vaccinated. This effectively stops the spread of the disease, protecting those who cannot be vaccinated, such as infants or the immunocompromised.

Based on the texts, how does individual vaccination contribute to community health?

A. It creates a collective barrier that protects vulnerable non-vaccinated individuals.✓ Correct
B. It ensures that the vaccinated person never gets sick.
C. It makes the pathogen stronger.
D. It allows the disease to spread faster.

Detailed Explanation

Text 1: Individual immunity. Text 2: Herd immunity (Collective barrier). Connection: Individual vax -> Herd immunity -> Protects others.

Key Evidence:

• "trains the body"

• "large percentage ... vaccinated"

• "stops the spread"

• "protecting those"

Why others are wrong: B (Focus on community.), C (Opposite.), D (Stops spread.).

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