Initially, an Infant Has No Response to a Nurse's White

Multiple Choice

Initially, an infant has no response to a nurse's white uniform. But after a couple of painful experiences of getting a vaccination shot from a nurse in a white uniform, the infant will react with fear in response to a nurse in a white uniform who simply walks into the examining room. In this example, the sight of a nurse in a white uniform has become a(n) _____ to the infant.

A) unconditioned response (UCR)
B) conditioned response (CR)
C) conditioned stimulus (CS)
D) unconditioned stimulus (UCS)