Stress is to a as a stressor is to a chronic situation; specific event physiological response; psychological response psychological response; physiological response response; stimulus

The answer is physiological response and stimulus. It is because stress occurs as it is triggered by something in which it likely responds to the stressor. The stressor in the other hand is a stimulus because it is the one responsible for triggering stress to respond to it as it is associated to the individual.

Choice D seems like the best answer text me if i am wrong