Chrissy and her therapist together wrote a list of ten scenes involving chrissy's fear of flying. after teaching her a relaxation technique, chrissy's therapist told her to imagine herself in the least frightening scene while she made herself feel relaxed. chrissy was undergoing

The answer is systematic desensitization.

Explanation:

Systematic desensitization is a common treatment for phobias. It consists in three steps: 1) involving the patient in muscle relaxation exercises; 2) the patient makes a list of frightening situations, scaling from least to most terrifying; and 3) the patient imagines himself in the least frightening situation, and gradually moves forward until confronting the most frightening one.