Which type of vehicle must accommodate more than 15 passengers, including the operator?

The correct answer is the type of vehicle known as a School Activity Bus. This designation specifically refers to vehicles that are designed to transport more than 15 passengers, including the driver. School Activity Buses are commonly used to transport students to and from school events, extracurricular activities, and field trips.

These vehicles are subject to particular safety regulations and standards to ensure the safety of minors during transport. The requirement for them to accommodate a larger number of passengers distinguishes them from smaller vehicles like family vans or crossovers, which are typically designed for personal use and have lower passenger capacities. While public transport buses may also carry more than 15 passengers, the specific mention of a School Activity Bus indicates its primary use catering to the needs of educational institutions and their students.