Dr. kali works with clients to them learn deep relaxation. next, he has them list their fears from least to most anxiety provoking. finally, dr. kali slowly exposes his clients to each of their fears and assists them in gaining control of their anxiety. his approach is best known as

Systematic desensitization  

Explanation:

Systematic desensitization: In psychology, the term systematic desensitization is referred to as a behavioral technique that is generally used to treat phobias, fear, and anxiety disorders. An individual, who undergoes a systematic desensitization process has been engaged in the relaxation exercise and encounters an anxiety-provoking stimulus, for example, place, object, etc.

Steps involved in systematic desensitization:

1. Establish the anxiety stimulus hierarchy from low to high.

2. Know about the mechanism response.

3. Connect stimulus to the coping method through counter conditioning.