Final answer:
Air Mobility is directly related to reducing strategic lift and increasing Force Responsiveness by providing rapid transportation of military assets, aligning with the demand for swift force deployment.
Step-by-step explanation:
To answer the question about reducing strategic lift and increasing Force Responsiveness, we can consider how various logistical strategies and assets can contribute to a military force's ability to project power and respond quickly to different scenarios. Out of the provided options, Air Mobility is the most direct answer to the question posed. Air Mobility involves the use of aircraft to transport troops, equipment, and supplies. This method can deliver vital resources to areas that are either difficult to reach or require a rapid response, which is crucial for operational flexibility and timely deployment of forces.
Other aspects such as using diplomacy to rally allies, marshaling economic power, and maintaining effective armed forces are broader strategic considerations that contribute to a nation's overall National Security Strategy, but they do not specifically address the question of reducing strategic lift requirements as directly as Air Mobility does.