The next 5 questions use this scenario:You are dispatched to…

The next 5 questions use this scenario:You are dispatched to a motor vehicle crash (MVC) involving a 35-year-old male who was ejected from the vehicle. Bystanders state that the car rolled multiple times before coming to a stop.Upon arrival, you note that the vehicle has severe damage, and the patient is lying supine on the pavement, not moving. Which of the following should be your first action?