The Nurse Cares for an Unstable Patient in the Intensive

The nurse cares for an unstable patient in the intensive care unit (ICU) . Which intervention should the nurse include in the plan of care to improve this patient's sleep quality?

A) Ask all visitors to leave the ICU for the night.
B) Lower the level of lighting from 8:00 PM until 7:00 AM.
C) Avoid the use of opioids for pain relief during the evening.
D) Schedule assessments to allow 4 hours of uninterrupted sleep.