A Dog Is Trained to Fetch Sodas from the Refrigerator

Multiple Choice

A dog is trained to fetch sodas from the refrigerator.It knows to first go the refrigerator.Once at the refrigerator, it knows to pull on the door.When the door is open, it knows to grab the can.With the can in its mouth, it knows to return to its master.This dog probably learned

A) serial patterns.
B) serial representations.
C) stimulus-response associations.
D) paired associates.