A nurse is planning care for a client who has terminal cancer and has a prescription for morphine. Which of the following interventions should the nurse include in the plan of care?

Instruct the client to stop taking the morphine if itching develops.

Instruct the client to actively cough to prevent a buildup of secretions in the airway.

Instruct the client to take diphenoxylate/atropine 5 mg PO twice a day.

Instruct the client to keep room lights dim during waking hours.