After a researcher conditions a dog to salivate in response to the sound of a tone, she continues to present the tone but does not give the dog any food. Eventually, the dog stops salivating to the tone. The dog is demonstrating:

Extinction

Explanation:

In terms of psychology, extinction refers to the progressive weakening of a conditioned response that results in a reduction or absence of the behavior. it explains why a prior conditioned behavior of an organism would eventually stop and it can be observed in both classical conditioning and operant conditioning. As per the question, the extinction signifies stopping of the saliva of the dog in absence of reinforcement of the behavior.

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