Research on stress and body function have found that prolonged stress?
a. reduces the effectiveness of the immune response.
b. has increased b cell function.
c. affects only a small number of body systems.
d. has increased adaptive energy stores.

A. reduces the effectiveness of the immune response. Numerous studies have been found to posit that there is a significant relationship between body response and stress. Too much stress or prolonged stress causes the body to fall short of its normal functioning. This disruption causes the body to shift into unresponsive and weak behavior which leads to illness and other caused diseases.

researcher bias.

Explanation: