Instrument Rating Checkride Practice Test

The distinction between VFR (Visual Flight Rules) and IFR (Instrument Flight Rules) primarily lies in the method of navigation and the associated regulations governing each type of flight. VFR is predicated on the pilot's ability to navigate using visual references outside the cockpit, which is heavily influenced by prevailing weather conditions. Pilots operating under VFR must maintain certain visibility and cloud clearance requirements to ensure safe navigation visually.

In contrast, IFR requires pilots to rely on flight instruments and navigational aids for navigation and requires adherence to more stringent regulations. IFR is used in various weather conditions, including those where visibility is limited due to clouds or precipitation. Pilots must be prepared to fly solely by instrument readings without outside visual cues, enhancing safety in adverse weather conditions.

Thus, option C accurately captures these essential differences, emphasizing the use of visual navigation and weather conditions for VFR and the reliance on instruments and stricter regulations for IFR.