What should you do when you approach a school bus that has its lights flashing and stop sign extended?

Answer: B — Stop your vehicle until the lights stop flashing

When you approach a school bus that has its lights flashing and the stop sign extended, it is crucial to stop your vehicle until the lights stop flashing. This rule is in place to protect children getting on and off the bus, as they may be crossing the street or walking near the roadway. Failing to stop can endanger students' safety and result in significant penalties, including fines and points on your driving record. Observing this rule demonstrates your commitment to road safety and ensures that vulnerable children can safely board or exit the bus without the risk of being hit by a moving vehicle.