What must you do when you approach a school bus that is picking up or dropping off children?

Answer: B — Immediately stop your vehicle

When you approach a school bus that is picking up or dropping off children, the correct action is to immediately stop your vehicle. This rule is in place to ensure the safety of children who may be crossing the road or getting on or off the bus. When the bus has its flashing red lights activated and the stop sign extended, all vehicles must come to a complete stop regardless of the direction they are coming from, unless there is a physical barrier (like a median) separating the bus from the other lanes of traffic. This helps protect children who might be in the vicinity, as they may not always be aware of approaching traffic. The law is strictly enforced, and disregarding it can result in severe penalties. Therefore, stopping when you see a school bus is crucial to safeguard the lives of young students.