Which of the Following Is NOT One of the Basic

Which of the following is NOT one of the basic steps in systematic desensitization?

A) The patient learns progressive relaxation, which involves successively relaxing one muscle group after another until a deep state of relaxation is achieved.
B) The behavior therapist helps the patient construct an anxiety hierarchy, which is a list of anxiety-provoking images associated with the feared situation, arranged in a hierarchy from least to most anxiety-producing.
C) The patient develops an image of a relaxing control scene, such as walking on a secluded beach on a sunny day.
D) Tokens or points are awarded to the patient as positive reinforcers for desirable behaviors and withheld or taken away from the patient for undesirable behaviors.