What should a driver do if they see a child running towards the bus as it is about to depart?

Answer: B — Stop the bus and wait for the child to safely board

When a driver sees a child running towards the bus as it is about to depart, the appropriate action is to stop the bus and wait for the child to safely board. This response prioritizes safety, as children may be unpredictable in their movements. By stopping, the driver allows the child to reach the bus safely without the risk of injury. Other options like blowing the horn or proceeding with caution do not directly address the immediate situation of a child approaching the bus, which requires more decisive action. Calling for assistance may be necessary in some situations, but it does not prevent the potential risk of the child being in danger while the bus is in motion. Stopping the bus ensures that the driver and the passengers remain safe while allowing the child to safely board the bus.