Where are the outside left and right side crossover mirrors mounted on a school bus?

Answer: A — Front corners

The outside left and right side crossover mirrors are mounted on the front corners of a school bus. This placement allows the driver to have a clear view of the areas directly alongside and in front of the bus, which is crucial for ensuring the safety of students as they enter or exit the bus. These mirrors help the driver to see any pedestrians, especially children, who might be in the bus's blind spots. By having the mirrors positioned at the front corners, they provide an extended field of vision that aids in detecting potential hazards and maintaining a safe environment during loading and unloading periods. The reflections from these mirrors are essential for preventing accidents and facilitating safe maneuvering around the bus.