What should you do when you are approaching a flashing red traffic light?

Answer: A — Make a full stop

When approaching a flashing red traffic light, you should come to a full stop. This option is correct because a flashing red light has the same meaning as a stop sign, and you are required to come to a complete stop before proceeding. Option B is incorrect because treating the flashing red light as a stop sign is actually the correct action to take. Option C is also incorrect because treating the flashing red light as a regular red light means that you would continue driving through it, which is not the correct behavior. Option D is incorrect because making a U-turn is not allowed when approaching a flashing red traffic light. Instead, you should come to a full stop and only proceed when it is safe to do so.