Adifferentiation between two similar stimuli when only one of them is consistently associated with the us is called _

The answer is "Stimulus Discrimination".
“us” in the above question stands for  unconditioned stimulus. Discrimination is a term utilized as a part of both operant and classical conditioning. It includes the capacity to recognize between one stimulus and similar stimuli. In the two cases, it implies just reacting to specific stimuli yet not to those that are similar.

explanation:

it was dumb and stupid town

answer; the above statement is (true);