Studies of Vulnerable Populations,for Example Children,older Adults,etc

Studies of vulnerable populations,for example children,older adults,etc. ,who are exposed to a chronic stressor indicate that they

A) eventually habituate to high levels of the stressor.
B) exhibit little adaptation to chronic stressors.
C) exhibit few cognitive decrements but do show signs of helplessness.
D) eventually learn to change their task strategies and focus to accommodate the noise in their environments.