What administrative action can ATC take regarding priority assignments?

The focus of the correct choice revolves around the function of Air Traffic Control (ATC) in ensuring safety and efficiency in air traffic management. Assisting in conflict resolution is a critical responsibility of ATC. It involves coordinating and communicating with pilots and other air traffic facilities to address potential conflicts in airspace, whether they be regarding altitude, routing, or approach paths. This action supports the overall goal of maintaining safe and orderly traffic flow in the airspace system.

In contrast, other options pertain to actions that are generally not within the standard operational purview of ATC. Editing arrival times typically falls under the domain of airlines or traffic management systems rather than ATC directly altering schedules. Overriding established protocols would undermine the safety framework that governs air traffic operations, and changing aircraft separation rules is a highly regulated procedure that requires specific authority and is not typically a unilateral action that ATC can take in response to priority assignments. Therefore, supporting conflict resolution showcases the proactive role of ATC in managing airborne traffic effectively.