Which is included in the categories of regulatory airspace?

Prohibited Areas are a specific category of regulatory airspace that is designated for the purpose of prohibiting all air traffic. These areas are established to protect national security interests, sensitive military operations, or other significant activities and may include areas around military bases or locations where critical governmental functions take place. Access to these areas is strictly controlled and is typically off-limits to all aircraft unless special permission has been granted.

In the context of other airspace categories, Controlled Firing Areas are used for activities that do not require restrictions on aircraft, alerting pilots to potential hazards but not prohibiting access. Alert Areas serve a similar function, providing information about high-traffic areas or activities but do not restrict airspace usage. Military Operations Areas allow military training exercises but do not prohibit civilian aircraft from flying through them, assuming they are operating under VFR and can ensure safety.