A 22-year-old student is in therapy because he has a long history of chaotic interpersonal relationships, episodes of psychosis, and multiple hospitalizations. He has attempted suicide three times, mostly precipitated by his feeling overwhelmed in some social setting. One session, he comes to his therapist greatly upset and anxious because he forgot to study some material that will be on an upcoming examination. The therapist reminds the patient that he has done well on previous examinations and suggests that they spend the session devising a study plan for the time the patient has left before the test. Such an intervention is commonly used in which of the following therapies?

a. Psychoanalysis

b. Object relation psychotherapy

c. Cognitive-behavioral therapy

d. Supportive psychotherapy

e. Interpersonal psychotherapy