A Nurse Is Instructing a Patient About Relaxation Techniques for Pain

A nurse is instructing a patient about relaxation techniques for pain management. The patient should:

A) keep bright lights on in the room.
B) use this technique as a way to wake up in the morning.
C) tense and relax individual muscle groups, starting with the toes and feet.
D) try to tense and relax all of the muscles of the body at the same time.