Final answer:
A Skinner box is a controlled environment used for operant conditioning, where animals learn to associate actions with consequences to modify their behavior.
Step-by-step explanation:
The box used in operant conditioning of animals that limits the available responses and increases the likelihood that the desired response will occur is called a Skinner box. B. F. Skinner, a major proponent of operant conditioning, developed the Skinner box to study the effects of reinforcements and punishments on behavior systematically. Within this environment, animals like rats or pigeons are able to press a lever or a disk to receive a reward or punishment. The controlled setup of the Skinner box allows researchers to observe and record the learning process, as the animals gradually learn to associate their actions with positive or negative consequences.