Marty's dog always sits when Marty opens th e cupboard to get the dog a biscuit. How would a behaviorist describe the dog's behavior?
a. The dog thinks that if he sits, he will get a biscuit.
b. The dog is hungry, so his instincts tell him to sit.
c. The dog expects to get a biscuit when Marty opens the cupboard.
d. The dog sits when Marty opens the cupboard.