_occurs when an event or stimulus desired by the client is removed after the client engages in behavior not consistent with the treatment program, as a means of decreasing the likelihood the client will repeat the undesired behavior.

Negative Punishment

Explanation:

Negative punishment is a method of operant conditioning which involves removing a desirable stimulus after a client acts in an undesirable manner, to discourage that behavior and reduce the likelihood of the behavior being repeated by the client in future.

the first question's answer is a.

answer law is not needed; /// (concurrent resolutions);