What risk is associated with a malfunctioning door latch on a school bus?

The increased risk of doors opening while the bus is in motion is a significant safety concern associated with a malfunctioning door latch on a school bus. When the latch does not properly secure the door, it can inadvertently open during travel, which poses a serious danger to the passengers and potentially to others on the road. School buses are designed with multiple safety features to ensure that doors remain securely closed while the vehicle is in motion, as this is crucial for preventing accidents or falls that could lead to severe injuries.

The safety of students is paramount, and any malfunction that compromises this integrity can lead to dangerous situations, especially considering the high number of children that rely on school buses for transportation. In contrast, the other options, such as engine overheating, fuel efficiency, or passenger comfort, do not directly relate to a malfunctioning door latch. The primary focus in this scenario is on the safety provided by secure door systems.