In pavlov's classical conditioning experiment, he presented the sound of a bell along with meat powder to his dogs. after several trials, the dogs learned to salivate to the sound of the bell in the absence of the meat powder.
if pavlov's dogs did not salivate to a buzzer but only to a bell, then this phenomenon would be an example of

a) habituation
b) stimulus generalization
c) backward conditioning
d) stimulus discrimination

Stimulus discrimination

Explanation:

Stimulus discrimination is a term that is used in both the concept of classical conditioning and ope-rant conditioning. It is the concept about to differentiate between two same stimuli. It is a concept in which a person or animal will learn to discriminate the difference between the conditioned and unconditioned stimuli.  

Thus in the above statement, In Pavlov's classical conditioning, the dog discriminates between the conditioned stimulus (bell) and unconditioned stimulus buzzer.

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the answer is a wheel