Final answer:
A driver must slow down and proceed cautiously over a speed bump to ensure safety and prevent vehicle damage.
Step-by-step explanation:
When approaching a speed bump, a driver should slow down and proceed with caution. Speed bumps are designed to enforce a lower speed limit and enhance safety, making option 1 the correct action to keep both the vehicle's occupants and pedestrians safe. Ignoring or speeding up over speed bumps can cause harm to the vehicle and jeopardize the safety of all nearby.