What is a common feature of special safety equipment in school buses?

Answer: C — Wheelchair lifts

The common feature of special safety equipment in school buses is wheelchair lifts. These lifts are essential for providing accessibility for students with disabilities, allowing them to enter and exit the bus safely. School buses are required to accommodate all students, including those who use wheelchairs, which is why wheelchair lifts are an integral part of the safety equipment. They ensure that students can board and deboard the bus without risk of injury, fostering an inclusive environment in the school transportation system. While sound systems with Bluetooth, enhanced air conditioning, and extra storage compartments may be present in some school buses, they do not directly relate to the safety and accessibility requirements mandated for transporting students with disabilities. The primary focus of special safety equipment is to ensure the safety and secure transportation of all students, which is embodied in the use of wheelchair lifts.