Which of the following is NOT a requirement when planning for VFR navigation?

The correct choice identifies that a thorough knowledge of NAVAIDs (Navigational Aids) is not a specific requirement for planning VFR (Visual Flight Rules) navigation. VFR navigation relies primarily on visual references, which means pilots must navigate using landmarks, terrain features, and other visual cues rather than solely depending on electronic navigation aids.

While understanding airspace restrictions, chart interpretation, and preflight planning are fundamental components of VFR navigation, they ensure that pilots are aware of their operating environment, can interpret navigation charts accurately, and can plan their route and flight safely and effectively. NAVAIDs may be useful and certainly enhance navigation capabilities, but they are not a core requirement for VFR operations, which are based on visual cues rather than instrument navigation.