Final answer:
B.F. Skinner developed the operant chamber, also known as the Skinner box, to study operant behavior, which helped further the understanding of behavioral psychology through operant conditioning. The correct option is d.
Step-by-step explanation:
The psychologist who devised the operant chamber to study operant behavior was B.F. Skinner. Skinner's invention of the operant conditioning chamber, also known as the Skinner box, allowed for controlled experiments on how behavior is affected by reinforcement and punishment. His approach to behaviorism and his development of operant conditioning as a form of learning behavior significantly advanced the understanding of behavioral psychology.
Skinner's work emphasized the idea that behaviors are influenced by the consequences that follow them. He built upon Thorndike's law of effect, conducting experiments with animals to see how they learned through operant conditioning. In a Skinner box, animals like rats or pigeons could press a lever or disk to receive a food reward, which demonstrated the principles of operant conditioning through rewards (positive reinforcements) or punishments (negative reinforcements).
Hence, Option d is correct.