Which field of psychology focuses on stress and its effects?

a. social psychology

b. psychoanalysis

c. cognitive psychology

d. health psychology?

I believe the answer is: Health psychology

Health psychology focused on how our behavior and state of mind would affect our overall health. For example, when human experiencing constant stress, our body would often filled with surge of adrenaline that make our heart pumped out faster. This would increase the likelihood of us developing heart diseases.