Final answer:
Drivers must stop at least 15 feet away from a stopped school bus with flashing red lights to ensure the safety of disembarking children.
Step-by-step explanation:
You must stop your vehicle at least C) 15 feet before reaching a school bus that is stopped with its red lights flashing, whether it is on your side of the road, the opposite side of the road, or at an intersection you are approaching. This is a standard safety regulation that helps to protect the well-being of children as they get on or off the school bus. It is essential for drivers to adhere to this law to ensure pedestrian safety and avoid potential accidents.