When approaching a stopped school bus, you should:

Answer: A — Stop at least 20 feet away

Approaching a stopped school bus, you should stop at least 20 feet away from the bus. This is because children may be crossing the street to get on or off the bus, so it is important to give them enough space and time to do so safely. Speeding up and passing quickly (B) is incorrect because it puts the children at risk of being hit. Following closely (C) is also incorrect as it does not provide enough space for the bus to safely merge back into traffic. Choosing "All of the above" (D) is incorrect because only option A is the correct and safe way to approach a stopped school bus.