This trend especially threatens children, elderly, and those with compromised immune systems.

Correct answer: B. elderly

A. especially
B. elderly
C. with compromised
D. immune systems

Explanation

This is incorrect. It should be "the elderly" to properly refer to older people as a group. The correct sentence should be: "This trend especially threatens children, the elderly, and those with compromised immune systems."

Last updated 2 September 2026

This trend especially threatens children, elderly, and those with compromised immune systems.

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