What must you do when encountering a school bus with its red lights flashing?

Answer: B — Stop your vehicle and remain stopped

When encountering a school bus with its red lights flashing, the correct action is to stop your vehicle and remain stopped. This is crucial because the flashing red lights indicate that children are boarding or disembarking from the bus, creating a potentially dangerous situation for them. The law requires drivers to halt their vehicles when approaching a stopped school bus with its red lights activated to ensure the safety of the children. Stopping is essential to prevent any accidents, as children may not always be aware of their surroundings and could unexpectedly dash across the road. Remaining stopped until the bus turns off its lights and begins moving again is a legal requirement in many jurisdictions and a vital safety measure. This protocol helps protect young pedestrians and promotes a safe environment around school transport.