What is the maximum number of passengers a school bus can carry?

A school bus is specifically designed to transport a larger number of passengers compared to other types of vehicles. The maximum capacity can vary depending on the size and model of the bus, but generally, a standard school bus can carry more than 15 passengers. This means that the answer indicating "15 or more passengers" accurately reflects the nature of school buses, which are typically configured to accommodate larger groups of children safely.

In contrast, the other options reflect capacities that are too low for school buses. Options citing 10, 15, or 20 passengers do not encompass the broader potential passenger capacities that school buses can achieve, thereby reinforcing that the correct choice encompasses a more realistic and inclusive maximum passenger limit that aligns with the operational standards for school transportation.