In what scenarios does ATC utilize "holding patterns"?

ATC utilizes "holding patterns" primarily during scenarios where there is a need to manage air traffic and ensure safe separation between arriving aircraft. This typically occurs when air traffic is heavy and there are temporary delays in arrivals. Holding patterns allow aircraft to remain in a predetermined airspace configuration while waiting for permission to land, enabling Air Traffic Control to maintain order and safety in busy airspace.

The purpose of these patterns is to provide a solution that prevents congestion and allows pilots to remain within a defined area until they can proceed to land safely. This ensures that arrivals are spaced out appropriately and reduces the risk of delays that could lead to potentially dangerous situations. Therefore, the correct answer reflects the essential function of holding patterns in air traffic management during periods of increased traffic or when conditions require a pause before landing.