Jenny received a lot of praise in class when she was the only one who did her homework on time.As a result,Jenny has never had to be reminded to do her homework;she always submits it on time.In this scenario,Jenny's behavior illustrates _____.
A)Pavlov's theory of classical conditioning
B)the concept of instinctive drift
C)the phenomenon of the placebo effect
D)Thorndike's law of effect