Assisting the patient with passive range of motion exercises promotes joint mobility and prevents contractures and muscle atrophy when the patient is unable to move independently.

Incorrect choices: a. Encouraging the patient to remain in bed perpetuates immobility and can lead to further complications such as deconditioning and reduced muscle strength. 

c. Restricting the patient's movement can worsen immobility-related complications and increase the risk of falls. Appropriate interventions should be implemented to facilitate safe mobility. 

d. Restraints should be avoided as much as possible and only used as a last resort to ensure patient safety. Restraints do not promote mobility and can have negative physical and psychological effects.