John's therapist gave him a relaxation exercise and asked him to list ten phobic situations from least to most frightening. The therapist is probably going to use a technique called

Reframing involves changing the way a person perceives a situation or thought, often to alter emotional responses. While it can be useful in therapy, it does not specifically address phobias through exposure or gradual desensitization, making it an inappropriate choice for John's exercise.

Shaping is a technique used in behavior modification that reinforces successive approximations of a desired behavior. It focuses on gradually training a person to reach a specific goal, rather than directly confronting fears, which is not what John's therapist is aiming to achieve.

Aversive conditioning aims to associate an unwanted behavior with an unpleasant stimulus to reduce that behavior. It is not suitable for treating phobias as it does not involve gradual exposure or desensitization to the feared object or situation, which is the goal of John's exercise.

Cognitive restructuring focuses on altering negative thought patterns and beliefs. While it can be beneficial for anxiety and phobias, it does not incorporate the gradual exposure to fears as a central element, distinguishing it from systematic desensitization.