Answer:
A. systematic desensitization.
Step-by-step explanation:
Systematic desensitization: In abnormal psychology, the term systematic desensitization is referred to as one of the behavioral techniques that is being used commonly by various psychologists while treating patients or clients with specific fear, phobias, and anxiety disorders.
A psychologist asked the client to write down the things which are bothering him or her from least to highest provoking stimuli or situation and then gradually deals with everything. A client is being exposed to several conditions or objects that are hindering him or her and therefore engaged in relaxation exercises.