Rachel Has Found That When She Opens Up the Cupboard

Multiple Choice

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

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