When must you stop near a school bus?

Answer: C — When the warning lights are all activated

Near a school bus, you must stop when the warning lights on the bus are activated. This indicates that the bus is either loading or unloading children, and it is crucial to stop to ensure the safety of the children getting on or off the bus. It is a legal requirement to stop when the school bus warning lights are on, regardless of whether other vehicles are present or the distance between your vehicle and the bus. So, it is essential to pay attention to the warning lights and come to a stop to avoid any potential accidents involving school children.