Which of the following terms refers to the rules governing flight under visual conditions?

The term that refers to the rules governing flight under visual conditions is Visual Flight Rules. These rules are designed for pilots who operate the aircraft in weather conditions generally clear enough for them to see where they are flying. Under Visual Flight Rules, pilots are responsible for maintaining adequate visibility and distance from clouds while also avoiding other aircraft. This set of regulations allows for a more flexible approach to navigation compared to Instrument Flight Rules, which apply when weather conditions are not favorable for visual navigation and rely on instruments for navigation and control. Understanding these rules is crucial for pilots as they dictate how they can safely navigate and operate an aircraft in visual conditions.