What should you do if you encounter a school bus with its lights flashing?

Answer: B — Stop your vehicle and wait until the lights stop flashing

When you encounter a school bus with its lights flashing, it is crucial to stop your vehicle and wait until the lights stop flashing. This rule is in place to ensure the safety of children as they enter or exit the bus. The flashing lights serve as a warning that children may be crossing the road, and stopping provides them with a safe environment to do so. Passing a school bus while its lights are flashing can lead to accidents and potentially serious harm to children who may not be visible or are moving unpredictably. In many states, including Washington, it is illegal to pass a stopped school bus when its lights are activated. The importance of this action emphasizes both the legal requirements and the moral responsibility drivers have to protect young pedestrians. Therefore, stopping your vehicle is the appropriate and necessary response in this situation.