Question

which of the following is a group that is especially susceptible to air pollution? people in their 20s marathon runners high schoolers asthmatics (people with asthma)

Explanation:

Asthma is a respiratory condition that makes the airways more sensitive. Air pollution can irritate and inflame these already - sensitive airways, leading to more frequent and severe asthma attacks. While people in their 20s, high schoolers, and marathon runners may be affected by air pollution to some extent, asthmatics have a pre - existing condition that specifically makes them more vulnerable.

Answer:

asthmatics (people with asthma)