Which airspace is under specific management by the U.S. government?

The correct answer is that restricted areas, denoted as R-###, are indeed under specific management by the U.S. government. These areas are designated for purposes that require the restriction of non-participating aircraft due to the potential presence of hazardous activities or operations, such as military training or testing. The management of these areas is typically regulated by the Federal Aviation Administration (FAA) in coordination with military authorities.

Restricted areas are established to ensure that non-participating aircraft do not enter these zones during times when the hazards exist. When an area is designated as restricted, it means that entry is not allowed without prior authorization from the appropriate authority, making these areas quite different from others, such as military operations areas or warning areas, which have different operational limitations and management protocols.

While military operations areas and warning areas may also have restrictions in place, they do not have the same mandated control that is required for restricted areas, where the government actively enforces regulations regarding access and operation within those designated boundaries.