What is one of the key factors supporting the "expedite" command?

The "expedite" command is primarily centered around urgency and the need for rapid action in air traffic control situations. When a controller issues an expedite command, it is often to adjust the flow of traffic and ensure that aircraft maintain safe separation. Thus, preventing potential collisions is a crucial aspect of this command. When flights are hurried to ensure they follow safe spacing, it helps avert situations where two aircraft could be dangerously close to one another, particularly in situations where timing is critical, such as during landing or holding patterns.

Although other options touch upon important areas in aviation, like maintaining schedules or regulations, those do not directly address the immediate safety concern that an expedite command is primarily designed to mitigate, which is the avoidance of collisions. The focus on preventing potential collisions aligns with the overarching priority in air traffic control to ensure the safety of all aircraft involved.