What does "VFR" stand for in aviation terminology?

In aviation terminology, "VFR" stands for Visual Flight Rules. This term refers to a set of regulations under which a pilot operates an aircraft in weather conditions generally clear enough to allow the pilot to see where the aircraft is going. VFR allows pilots to navigate and control the aircraft by visual references outside the cockpit, relying on their ability to see and avoid obstacles and other aircraft.

Pilots flying under VFR have the advantage of making tactical decisions based on their observations and the environment, such as adjusting their flight path to avoid bad weather or air traffic. This contrasts with IFR (Instrument Flight Rules), where pilots must rely on instruments and cannot maintain visual reference outside the cockpit due to poor visibility or weather conditions.

The other options do not accurately represent what "VFR" stands for in aviation, as they introduce terms that either do not relate directly to flight rules or are not recognized terminology in standard aviation practices.