In conditioning, the unconditioned stimulus unconditionally elicits a reaction. for example, a bit of black pepper blown into the eye produces a blinking response.

a. classical
b. operant
c. response
d. stimulus

D. Stimulus

Explanation:

A conditioned stimulus is a substitute stimulus that triggers the same response in an organism as an unconditioned stimulus. One put, a conditioned stimulus then makes an organism react to something because it is associated with something else.

answer; the importation of slaves from africa,//   is the correct answer.

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