Researchers condition a flatworm to contract when exposed to light by repeatedly pairing the light with electric shock.The electric shock is a(n)
A) neutral stimulus.
B) conditioned stimulus.
C) conditioned response.
D) unconditioned stimulus.

Question

Quizplus · Accepted Answer

The electric shock is the unconditioned stimulus because it naturally elicits a response (like contraction) without any prior conditioning.

Researchers Condition a Flatworm to Contract When Exposed to Light