Which technique removes a reinforcer to reduce the frequency of a behavior?

A) extinction
B) punishment
C) negative reinforcement
D) systematic desensitization

Extinction involves removing a reinforcer for a behavior, which results in a decrease in the frequency of the behavior over time. This can be an effective technique for reducing unwanted behaviors that are being maintained by reinforcement. Punishment also involves removing a reinforcer, but it involves adding something aversive to decrease the behavior, whereas extinction simply involves no longer providing a positive consequence for the behavior. Negative reinforcement involves removing an aversive stimulus to increase the frequency of a behavior, which is the opposite of what is being asked. Systematic desensitization is a technique used for reducing anxiety and phobias, which involves gradually exposing the person to the feared stimulus while they are in a relaxed state, but it does not involve removing a reinforcer to reduce behavior.