is the decrease in response to a stimulus that occurs after repeated presentations of the same stimulus, whereas is a basic phenomenon of learning that occurs when a previously conditioned response decreases in frequency and eventually disappears.

ANSWER: HABITUATION; EXTINCTION

EXPLANATION: HABITUATION refers to the reduction or decrease in the strength/intensity of a response after reoccurring presentation of a stimulus which elicits a behavioral response. However, constant exposure leads to a decrease in response arousal and this technique had been used in therapy for extinguishing fears in individuals.

HABITUATION is regarded as the simplest form of learning in the school of behavioral psychology.

EXTINCTION refers to the behavioral phenomenon of gradual decrease or weakening of a conditioned response that results in the behavioral fading of non-reinforced conditioned response over time. In other words, it is described as the fading and complete disappearance of previously learned behavior elicited by association with another event.

the 2nd option is the answer