If your car breaks down on the highway at night, what should you do?

Answer: A — Park the car completely off the road.

Parking the car completely off the road is the safest action to take if your car breaks down on the highway at night. This helps to ensure that you are not in the way of oncoming traffic and reduces the risk of another vehicle colliding with yours. Being completely off the road provides a safer environment for both you and the other drivers on the highway. Turning on high-beam lights, while it may seem like a good way to increase visibility, can actually create glare for other drivers, making it more difficult for them to see. It is generally more advisable to use hazard lights to alert other drivers of your presence. Thus, parking off the road is the primary goal in such a situation to enhance safety for all.