Rachel Has Found That When She Opens the Cupboard Door

Multiple Choice

Rachel has found that when she opens the cupboard door to get the cat food, the cats come running to the kitchen. Rachel knows that this is classical conditioning and that the unconditioned stimulus is the ________ and the conditioned stimulus is the ________.

A) cat food; cupboard door opening
B) cupboard door opening; cat food
C) cat food; kitchen
D) kitchen; cat food