Final answer:
B.F. Skinner was a proponent of behaviorism and studied operant conditioning.
Step-by-step explanation:
The correct statement about B.F. Skinner is:
d) He was a proponent of behaviorism and studied operant conditioning.
B.F. Skinner was an American psychologist who focused on how behavior is affected by its consequences. He believed that behavior can be modified through reinforcement and punishment, and he is famous for his research on operant conditioning. Skinner developed a chamber called an operant conditioning chamber, or Skinner box, to study the principles of modifying behavior.