As an infant, Stephanie received many penicillin injections from the doctor. When she later saw a photographer in a white coat that was similar to the doctor's coat, she started to cry. This is an example of .

Classical conditioning.

Explanation:

Classical conditioning is defined as learning process in which two stimuli is linked togather to generate a response. Biologically influential and strong stimuli is subjected with formerly neutral stimuli.

According to the question, as Stephanie has got many penicillin injections from doctor , she recognizes that injections received from white-coat people(doctor) give her pain. Due to this learning, she recognized white coat photographer as doctor who will give injection and thus, started to cry

true x

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