What is the consequence of visibility being less than VFR minimums?

When visibility is less than VFR (Visual Flight Rules) minimums, one of the primary consequences is that aircraft may be instructed to delay landings. VFR minimums are established to ensure that pilots have enough visibility to navigate safely during flight and especially during landing. When visibility falls below these minimums, it makes it more challenging for pilots to identify their approach paths, other aircraft, and potential obstacles, which can lead to unsafe flying conditions.

In such scenarios, air traffic control (ATC) has the authority to manage traffic and maintain safety by instructing aircraft to hold off on landing until conditions improve or they can be safely landed. This is a critical safety measure to prevent accidents in low visibility conditions and to ensure orderly traffic flow in the terminal airspace.

The other options do not accurately reflect the situation. For example, requiring all aircraft to fly above 10,000 feet, allowing aircraft to land without clearance, or suggesting that visibility does not affect SVFR (Special Visual Flight Rules) clearances does not align with regulations and practices aimed at maintaining safe operations in adverse weather conditions.