What should you do at a four-way stop?

Answer: D — All of the above

At a four-way stop, it is important to follow the rules of the road and communicate with other drivers to ensure safety. Taking turns, yielding to the car to your right, and going first if you reach the intersection first are all necessary actions to take at a four-way stop. Option A Taking turns may seem like a reasonable answer, but it is important to note that it is not always clear whose turn it is. Option B: Yielding to the car to the right is also correct, but it is not the only thing you should do at a four-way stop. Option C: Going first if you reach the intersection first is true, but only if there is no other car already at the intersection. Therefore, the best answer is option D: All of the above, as it encompasses all of the correct actions to take at a four-way stop.