What action should drivers take when a school bus is preparing to unload students?

Answer: C — Reduce speed or prepare to stop

When a school bus is preparing to unload students, it is crucial for drivers to reduce their speed or prepare to stop. This is because children may be exiting the bus and may not be aware of surrounding traffic. Utilizing a cautious approach allows drivers to have better control over their vehicle, ensuring the safety of the children as they leave the bus. In many jurisdictions, laws require vehicles to stop when the bus displays its flashing lights and stop arm, reflecting the importance of this action to protect students. Taking any other action, such as honking the horn or trying to accelerate past the bus, could create dangerous situations for the children. Changing lanes to avoid delays does not address the potential hazards present and could lead to confusion or accidents if children are crossing the road unexpectedly. Thus, reducing speed or preparing to stop is the safest and most responsible choice.