Which airspace prohibits flight without authorization from the controlling agency?

The right answer to the question about which airspace prohibits flight without authorization from the controlling agency is related to Restricted Areas. These areas are established for the purpose of containing unusual hazards, such as military operations or other activities that could pose a risk to aircraft. Because of the potential dangers posed in these areas, no person may operate an aircraft within a Restricted Area unless they have received proper authorization from the controlling agency responsible for that airspace.

In contrast, Prohibited Areas are those where flight is not allowed at all, regardless of authorization, typically for national security reasons. Warning Areas, while they may contain hazards to non-participating aircraft, do not strictly require authorization for transit. Alert Areas inform pilots of a high volume of pilot training or unusual aerial activity, but flying in these areas does not require special permission. Understanding the specific regulations and requirements of each type of airspace is crucial for safe and compliant aircraft operations.