What should you do if you encounter a school bus with its stop sign extended?

Answer: C — Stop your vehicle

When you encounter a school bus with its stop sign extended, stopping your vehicle is essential for the safety of children getting on or off the bus. In Saskatchewan, and many other regions, laws require that vehicles traveling in both directions must come to a complete stop when a school bus activates its stop sign and lights. This rule is in place to ensure that children can cross the road safely without the risk of being struck by passing vehicles. The presence of the stop sign indicates that it's not safe to pass the bus, as children may be present in the vicinity. Other behaviors—whether it’s passing the bus at high speed, slowing down to proceed cautiously, or continuing to drive normally—compromise safety and violate traffic laws. Stopping your vehicle allows you to assess the environment carefully, ensuring that any children are safely out of the road before you resume driving.