Final answer:
Response cost can be described as a removal of a reinforcer in operant conditioning.
Step-by-step explanation:
In operant conditioning, response cost can be described as b. a removal of a reinforcer. Response cost involves taking away a reinforcing stimulus or privilege in order to decrease a behavior. For example, if a student misbehaves in class, the teacher may remove their recess time as a response cost to discourage the misbehavior.