What action should you take if you encounter an emergency vehicle with flashing lights?

Answer: C — Pull over and allow it to pass

When you encounter an emergency vehicle with flashing lights, the appropriate action is to pull over and allow it to pass. This is crucial because emergency vehicles such as ambulances, police cars, and fire engines are responding to urgent situations and need to reach their destinations as quickly as possible. By moving to the side of the road, you create a clear path for the vehicle, which helps ensure that emergency services can do their work effectively and without delay. It's important to gauge the situation before pulling over; make sure it is safe to do so without creating a hazard for yourself or other road users. This action not only follows road safety laws but also reflects good driving etiquette, showing respect for the critical work emergency responders do. Continuing to drive normally, sounding your horn, or speeding up to avoid being caught behind the emergency vehicle would obstruct its path and could potentially lead to dangerous situations for both yourself and the emergency responders.