How should a driver react to a school bus that has its stop sign extended?

Answer: B — Stop and wait until the sign is retracted

When a school bus has its stop sign extended, it signifies that the bus is either loading or unloading children, and it is crucial for drivers to ensure the safety of those children. Stopping and waiting until the stop sign is retracted is the appropriate reaction because it complies with traffic laws designed to protect young pedestrians. In most states, including Ohio, it is illegal to pass a school bus with its stop sign extended, regardless of the direction you are approaching from. This action not only adheres to legal requirements but also serves as a basic safety precaution, allowing children to cross the road safely. The importance of a complete stop in this situation cannot be overstated; doing so helps prevent tragic accidents and ensures that drivers are vigilant about their surroundings, particularly in school zones where children are present.