What should a school bus driver do before opening the door at a student stop?
a.Open the door immediately upon stopping
b.Check all mirrors, ensure traffic has stopped, activate red lights and stop arm, then open the door
c.Honk the horn twice
d.Flash the headlights
Explanation
Before opening the door, the driver must check all mirrors to ensure the area around the bus is safe, verify that traffic has stopped, and activate the red flashing lights and stop arm before opening the door for students.