How many tenets of airpower are central to the Air Force's doctrine?

The correct choice is seven because the tenets of airpower are foundational principles that guide the employment of air and space forces in military operations. The United States Air Force doctrine identifies these seven tenets as essential for effective airpower application and understanding. They include: Flexibility, Versatility, Synergy, Concentration, Priority, Balance, and Persistence. Each tenet plays a critical role in defining how airpower can best be used to achieve strategic objectives, reflecting the unique capabilities and advantages that air forces bring to joint operations. Understanding these tenets is vital for military professionals as they plan and execute operations involving air assets.