Which of the following is essential for ensuring passenger safety on a bus during transport?

Ensuring passenger safety on a bus during transport largely hinges on the presence of properly functioning seat belts. Seat belts are a fundamental safety feature that restrains passengers in their seats, significantly reducing the risk of injury during sudden stops or collisions. Their effectiveness lies in preventing passengers from being thrown forward or ejected from their seats in the event of an accident.

While regular bus cleaning contributes to the overall hygiene and comfort of the ride, and bus aesthetics, along with entertainment options, may enhance the passenger experience, they do not directly impact safety. Clean buses are important for health and comfort, but they do not prevent accidents or injuries. Similarly, aesthetic appeal and entertainment amenities might make the journey more enjoyable, but these factors do not address the critical elements of safety necessary for passenger protection while on the road.