Where should backing-up a school bus never occur?

Answer: B — On school grounds

Backing up a school bus should never occur on school grounds due to the high concentration of children and the potential for distractions in that environment. School grounds often have foot traffic and areas where students congregate, which increases the risk of accidents. Additionally, the layout of school grounds can make it difficult for the driver to see everything behind the vehicle, adding another layer of risk. Therefore, to ensure the safety of the students and other pedestrians, backing up on school grounds is prohibited. In contrast, while backing up on busy highways, residential streets, or parking lots may have their own hazards, school grounds are particularly sensitive areas where safety considerations must be prioritized.