Question

______ has a negative effect on all residents.
○ nutrition
○ traffic
○ lack of exercise
○ air pollution

Explanation:

Nutrition (when adequate) is beneficial; traffic primarily impacts commuters; lack of exercise affects individuals who do not exercise. Air pollution is a widespread environmental hazard that is inhaled by all residents, regardless of their behavior or routine, causing negative health and quality-of-life effects for everyone in the area.

Answer:

D. Air pollution