When two vehicles arrive at a four way stop at the same time, which one has the right-of-way?

Answer: A — The vehicle on the left

The vehicle on the left has the right-of-way in this situation because it is traditional road etiquette to give the right-of-way to the vehicle on the right. This helps to avoid confusion and accidents at intersections. Option B and C are also incorrect because they do not follow this traditional rule of giving the right-of-way to the vehicle on the right. Option D is incorrect in this scenario because it assumes that one of the vehicles is turning left, while the question states that both vehicles are arriving at the same time. Thus, the correct answer is A, the vehicle on the left.