Afear-potentiated startle
a. the difference between a startle response in a neutral condition and in a high arousal condition.
b. found in animals but not in humans.
c. the startle response that one has to an unexpected burst of noise.
d. an expression of fear.

D

Explanation: The correct answer is letter D, an expression of fear. The FPS is a reaction that an organism has caused by a stimulus usually a strong noise or something visual.

This stimulus can be neutral, so it is no need for it to be unexpected or be in an a high-arousal state, although this things contribute to the intensity of the response.

answer; direct observation;

answer; and function;