A Hospitalized Client Uses a Transdermal Fentanyl (Duragesic)patch for Chronic

A hospitalized client uses a transdermal fentanyl (Duragesic) patch for chronic pain.What action by the nurse is most important for client safety?

A) Assess and record the client's pain every 4 hours.
B) Ensure the client is eating a high-fiber diet.
C) Monitor the client's bowel function every shift.
D) Remove the old patch when applying the new one.