Final answer:
To protect the patient's safety during mobilization, the nurse should have a colleague follow the patient closely with a wheelchair. Using a waist belt may restrict the patient's movement and hinder their recovery. Mobilizing the patient in the early morning or late evening does not pose a safety risk.
Step-by-step explanation:
To protect the patient's safety during mobilization, the nurse should have a colleague follow the patient closely with a wheelchair (option B). This ensures that if the patient experiences any difficulties or falls, they can be immediately assisted and supported. Using a waist belt (option A) may restrict the patient's movement and hinder their recovery. Mobilizing the patient in the early morning or late evening (option C) does not pose a safety risk, but it may be beneficial to schedule mobilization at a time when the patient is well-rested and less fatigued. There is no need to exclude family members from participating in mobilization (option D) as their support and presence can promote the patient's emotional well-being and motivation.