Respuesta :
The correct answer is letter C.
Explanation: An association must be formed between a significant stimulus, such as the dog, and a neutral stimulus, such as the bark.
An association is the example of Anna's behavior which is sweaty palms and heart races.
What is an association?
This is a phenomenon that formed between a significant stimulus, such as the dog, and a neutral stimulus, such as the bark.
Hence, the association is the example of Anna's behavior which is sweaty palms and heart races.
Therefore, the Option C is correct.
Read more about association
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