The nurse is caring for a 10-year-old child who has an acute head injury, has a pediatric Glasgow Coma Scale score of 9, and is unconscious. What intervention should the nurse include in the child's care plan?

Perform chest percussion and suctioning every 1-2 hours.

Perform active range of motion and non-therapeutic touch every 8 hours.

Elevate the head of the bed 15-30 degrees with the head maintained in the midline.

Maintain an active, stimulating environment.