What is indicated by the term "VFR" in aviation?

The term "VFR" stands for Visual Flight Rules. This set of regulations governs the conduct of pilots when flying under visual conditions, meaning that the pilot must maintain sight of the ground and be able to navigate by visual reference to terrain and landmarks. Under VFR, pilots are responsible for ensuring their own separation from other aircraft and obstacles, and they must also be able to see and avoid weather conditions that might impede visibility.

In contrast to VFR, there are Instrument Flight Rules (IFR), which govern flying in conditions where visual reference is limited or when flying at night. Understanding VFR is crucial for pilots, as it dictates many aspects of flight planning and execution in situations where weather permits visual navigation. The other options provided do not accurately describe what VFR entails in aviation, thereby confirming the correctness of the answer related to visual flight regulations.