In Intervening to Promote Ambulation, Coughing, Deep Breathing, and Turning

In intervening to promote ambulation, coughing, deep breathing, and turning by a postoperative patient on the first postoperative day, which action by the nurse is most helpful?

A) Discuss the complications of immobility and poor cough effort.
B) Teach the patient the purpose of respiratory care and ambulation.
C) Administer ordered analgesic medications before these activities.
D) Give the patient positive reinforcement for accomplishing these activities.