If two vehicles approaching from opposite directions each reach a stop sign at about the same time, then

Answer: D — The vehicle turning left must yield to the vehicle going straight or turning right

In the scenario where two vehicles approaching from opposite directions reach a stop sign at approximately the same time, the correct answer is D - The vehicle turning left must yield to the vehicle going straight or turning right. This is in accordance with the standard rules of right-of-way at stop signs. When vehicles arrive at a four-way stop intersection simultaneously, the vehicle that intends to turn left must yield to the vehicle going straight or turning right. This rule helps ensure smooth traffic flow and prevents potential collisions by giving priority to the vehicles that have fewer obstacles in their path.