When a school bus is stopped and its red lights are flashing, what must you do?

Answer: A — Stop at least 10 feet behind the bus

When a school bus is stopped with its red lights flashing, it indicates that children are being loaded onto or off the bus. As a driver, it is important to be aware of this and take necessary precautions to ensure the safety of these children. Option A, stopping at least 10 feet behind the bus, allows for a safe distance between your vehicle and the bus, giving the children enough space to get on or off the bus safely. Options B and C, honking your horn and flashing your headlights, are both unnecessary and may startle or distract the children and the bus driver. Option D, driving around the bus, is also unsafe as it puts children at risk of being hit by a passing vehicle. Therefore, the most appropriate and safe action to take when a school bus is stopped with its red lights flashing is to stop at least 10 feet behind the bus.