What is the maximum holding speed for civil aircraft?

The maximum holding speed for civil aircraft, according to FAA regulations, typically varies based on the type of airspace and the altitude at which the holding pattern is being flown. Above 14,000 feet, the maximum holding speed is 265 knots, which is why this answer is correct.

It's important for pilots and air traffic controllers to adhere to these speed limits in holding patterns to ensure safety and maintain efficient air traffic flow. By understanding these parameters, it helps prevent excessive speeds that could complicate maneuvers within controlled airspace.

Other options represent lower maximum speeds that apply in different contexts, such as below 14,000 feet in certain airspaces. However, above that altitude, the limit increases to 265 knots, making this the correct and applicable answer for the question regarding the maximum holding speed for civil aircraft.