What should you NOT do while driving over a large object in the road?

The most appropriate action when navigating over a large object in the road is to avoid speeding up. Accelerating toward a large obstacle can be quite dangerous. Increased speed could lead to losing control of the vehicle, especially if the object causes a sudden jolt or could potentially damage the vehicle. By maintaining a safe speed or slowing down, a driver can better manage the situation, assess the object's nature, and understand the safest way to pass over it.

The other options, such as maintaining acceleration, slowing down steadily, or braking firmly just before contact, highlight various approaches a driver might consider. However, speeding up contradicts the best practice of ensuring safety and control while navigating potential hazards on the roadway.