Fundamental for nursing question

A nurse is caring for a confused patient. Which should the nurse do to prevent this patient from falling? 1. Encourage the patient to use the corridor handrails. 2. Place the patient in a room near the nurses’ station. 3. Reinforce how to use the call bell. 4. Maintain close supervision.

The answer is 4 and I thought the answer was 1. Is it because the patient is confused?