What should a driver do before driving a school bus regarding outside mirrors?

Before driving a school bus, it is crucial for the driver to adjust the outside mirrors to ensure correct visibility. Properly adjusted mirrors provide a clear view of the bus's surroundings, including blind spots and traffic, which is essential for safe maneuvering, especially when loading and unloading students. Adequate visibility helps the driver respond effectively to any potential hazards and enhances overall safety.

The other options, while relevant to bus safety and operation, do not specifically address the immediate need for visibility checks before driving. Ensuring that mirrors are correctly positioned is a key component of a pre-trip inspection focused on safety and situational awareness.