Gary Trains His Hamster to Roll a Marble

Multiple Choice

Gary trains his hamster to roll a marble. First, he reinforces the hamster when it walks toward the marble, then he reinforces when it touches the marble with its nose. Finally, the hamster learns to roll the marble and is reinforced for it. This example illustrates ________.

A) chaining
B) counterconditioning
C) shaping
D) classical conditioning