What is the primary responsibility of a school bus driver?

The primary responsibility of a school bus driver is to transport students to school safely and on schedule. This encompasses not just the act of driving but also ensuring that safety measures are adhered to throughout the trip. This includes following safe driving practices, obeying traffic laws, and adhering to bus stop procedures to protect the well-being of the students.

While monitoring student behavior, assisting students, and maintaining the bus's mechanical integrity are important aspects of a bus driver's role, they are secondary to the main objective of providing safe and timely transportation. If a driver fails to transport students safely and without delays, all other responsibilities become secondary, as the core duty is to ensure that students arrive at their destination safely and reliably. Therefore, the emphasis on safety and punctuality makes this the correct choice as the primary responsibility of a school bus driver.