On the route, the wingman will never fly below lead or which of the following?

The correct answer, which specifies that the wingman will never fly below lead by 500 feet AGL (Above Ground Level), is rooted in the principles of aviation safety and tactical formation flying. Maintaining a minimum vertical separation of 500 feet ensures sufficient distance to prevent mid-air collisions, allowing visual reference and maintaining safe maneuvering room.

This standard is typically observed in military operations and is critical for maintaining effective situational awareness and minimal risk when flying in close formation. Flying at this altitude helps wingmen avoid obstacles, especially during low-level operations, and ensures that they can respond effectively to changes in lead's flight path, altitude, or speed.

In contrast, the other height options, 300 feet, 400 feet, and 600 feet, do not align with the established risk management practices that emphasize a minimum of 500 feet AGL to ensure safe and effective operations while still achieving the necessary tactical advantages of formation flying. Adhering to this vertical separation also supports regulation compliance and helps in maintaining proper visual references between aircraft.