Which statement about b. f. skinner is correct?
a. he is famous for demonstrating the principles of operant conditioning:
b. the motivation for a behavior happens after the behavior is demonstrated.
c. he placed hungry rats in a maze with no reward for finding their way through it, and he studied a comparison group that was rewarded with food at the end of the maze.
d. he worked with edward c. tolman to prove that fear is both an instinct and a reflex.
e. his experiments demonstrated that organisms can learn even if they do not receive immediate reinforcement.