Frank is seeing a therapist for his spider phobia. the therapist first teaches him muscle relaxation and then they develop a stimulus hierarchy. frank is seeing a therapist who uses

I believe the answer is: systematic desensitization

systematic desensitization is the process of reducing our reaction toward a certain stimulus by gradually increase our exposure to that stimulus.
Muscle relaxation technique is often used in the process of increasing patient's exposure to something that scared them.

Basically create a schedule on what you need to study and stick with it