What does VFR stand for in aviation?

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 their aircraft by visual reference to the ground and other landmarks, rather than relying solely on instruments.

In the context of aviation operations, VFR is crucial because it establishes guidelines for flying at lower altitudes and maintaining visual separation from obstacles and other air traffic. Pilots operating under VFR must be able to maintain visual contact with the ground and are typically responsible for maintaining their own separation from other aircraft.

The other options provided do not accurately reflect standard terminology used in aviation, making VFR the clear and correct choice in this context.