The Suggestion by the Nurse Which Is Most Helpful to a Patient

The suggestion by the nurse which is most helpful to a patient who complains of chronically not feeling rested after sleep would be:

A) avoid going to bed hungry or overly full.
B) try to exercise just before going to bed.
C) sleep late the next morning if possible if you are tired on awakening.
D) take a nap during the day to help relieve overall fatigue.