What do flashing red lights on a school bus signify?

Answer: C — The bus is unloading or loading children

Flashing red lights on a school bus indicate that the bus is unloading or loading children. This is a crucial safety measure designed to protect children as they cross the road when getting on or off the bus. When you see a school bus with its red lights flashing, it serves as a clear warning to drivers that they need to stop their vehicles in both directions. This law is in place to ensure the safety of children who may be crossing the street, emphasizing the importance of awareness and caution around school buses. The other options provide different interpretations of the flashing lights, but only the indication of unloading or loading children aligns with the safety practices and legal requirements surrounding school bus operations.