What should never be done while backing up a school bus?

Answer: C — Engage the accelerator

When operating a school bus, safety is the top priority, especially when maneuvering in reverse. Engaging the accelerator while backing up is something that should never be done because it can lead to a loss of control. When a bus is in reverse, the driver should always focus on controlling the speed and direction carefully. By engaging the accelerator, there is a risk of not being able to react quickly to potential obstacles or children in the vicinity. Instead, drivers should rely on maintaining a slow, steady pace when backing up, using mirrors and looking directly behind the bus to ensure the path is clear. This emphasizes the importance of vigilance and controlling the vehicle's speed rather than increasing it. Therefore, the focus should be on safety and precision rather than speed when reversing a school bus.