Why must a school bus driver walk through the bus at the end of every route, even if no problem was reported?

Pick an answer

1. To check the fuel gauge before refueling
2. To make sure no student was left behind asleep or out of view
3. It is only required once a month as a formality, though the manual is explicit about this
4. To clean the bus thoroughly before it is parked

Correct!

Not quite. The correct answer is highlighted.