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

Answer: B — Stop your vehicle

When you see a school bus with its red lights flashing, stopping your vehicle is essential for the safety of children boarding or exiting the bus. The flashing red lights indicate that students are either getting on or off the bus, and it's a clear signal that all traffic must come to a complete stop regardless of the direction the vehicle is approaching from. This law is in place to ensure that children have a safe space to cross the street and that drivers are fully aware of the potential dangers in the vicinity. Failing to stop when required can result in severe penalties, including fines and points on your driving record, as the safety of children is a top priority in traffic laws. Therefore, adhering to this requirement protects not only the children but also reinforces the importance of following traffic regulations in school zones.