What type of on-airport land must receive FAA permission to be reclassified?

Aeronautical land is the correct choice because it encompasses areas that are necessary for the operation and safety of aircraft activities, such as runways, taxiways, and other land used for aviation-related purposes. The Federal Aviation Administration (FAA) regulates these types of lands to ensure that they are appropriately used in a manner that supports aviation-related activities. Any reclassification of aeronautical land requires FAA permission to maintain operational integrity and adherence to federal standards.

In contrast, off-airport land, public land, and private land do not typically require the same oversight from the FAA for reclassification, as they do not directly relate to the requirements and functionalities that support airport operations. Thus, the focus on aeronautical land is primarily driven by its critical role in aviation safety and operations, making FAA permission essential for any reclassification.