What action should you take when you see a school bus with its stop sign extended?

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

When you see a school bus with its stop sign extended, the appropriate action is to stop and wait until the sign is retracted. This sign being extended indicates that children may be entering or exiting the bus, and it is crucial to ensure their safety by preventing any vehicles from passing. The law requires that all vehicles, regardless of the direction they are approaching from, stop when a school bus has its stop sign displayed. This is to protect the children who are often unpredictable in their movements. By stopping, you are providing a safe environment for them to cross the street. Once the stop sign is retracted, and you receive clear indication that it is safe to proceed, you can then continue driving. Following this regulation not only demonstrates responsible driving behavior but also helps to prevent accidents involving children.