A nurse is collecting data from the caregiver of a client who has Alzheimer's disease. The caregiver reports the client has difficulty sleeping at night and wanders throughout the house. Which of the following interventions should the nurse recommend?

A. Give the client a barbiturate medication at bedtime: Barbiturates are generally not recommended for older adults due to their high risk of sedation, respiratory depression, falls, and cognitive worsening. Pharmacologic sleep aids should be used cautiously and only after nonpharmacologic strategies have been attempted. B. Put a simple lock on the client's bedroom door: Locking doors can increase confusion, anxiety, and agitation in clients with Alzheimer's disease. It does not address the underlying cause of nighttime wandering and may create safety hazards. C. Encourage the client to take frequent walks during the day: Increasing daytime activity and exposure to natural light helps regulate circadian rhythms and reduces nighttime restlessness. Regular physical activity can improve sleep quality and decrease wandering behaviors at night. D. Allow the client to nap for at least 1 hr during the day: Long daytime naps can further disrupt nighttime sleep patterns and exacerbate insomnia. Limiting naps and promoting daytime activity is more effective in improving nocturnal sleep for clients with dementia.