What should you do if you see an emergency vehicle with flashing lights behind you?

Answer: B — Pull over to the right side of the road and stop

When you see an emergency vehicle with flashing lights behind you, the appropriate action is to pull over to the right side of the road and stop. This is a crucial safety measure as it allows emergency personnel to maneuver quickly and safely to respond to a situation, such as assisting someone in need or attending to an accident. By stopping to the right, you create a clear path for the emergency vehicle, thereby facilitating a quicker response time and minimizing potential hazards on the road. This action is also mandated by law in many states, including Arizona, where drivers are required to give the right-of-way to emergency vehicles. Failing to yield by not pulling over can impede emergency responses and may result in legal consequences. Additionally, it keeps both the emergency personnel and other road users safe by reducing the chance of collisions.