Which of the following is a purpose of Restricted Airspace?

Restricted airspace serves several important purposes, one of which is national security. This type of airspace is designated to provide additional protection for sensitive areas and activities, such as military installations or operations. By restricting access to these areas, it helps ensure that unauthorized personnel or aircraft do not pose a threat to operations that may be critical to national safety.

While aircraft training, weather monitoring, and traffic management are important aspects of aviation operations, they each fall under different types of airspace or procedures that do not primarily focus on security. For instance, aircraft training often occurs in controlled or special use airspace designated for practice maneuvers, while weather monitoring is typically a function of weather services that might operate within different airspace classifications. Traffic management, vital for efficient air traffic flow, is handled through airspace management systems that organize and direct flight paths rather than implementing restrictions for security reasons.