1. The problem asks how Eisenhower develops his argument that military strength is not the best way to create lasting peace. 2. The question provides four options to choose from: a, b, c, and d. 3. To answer, we analyze each option: - a. He dismisses the ways the military and arms industry can fail as unlikely. (This suggests ignoring failures, which is not a strong argument for lasting peace.) - b. He uses research findings that prove the best ways to improve humanity across the world. (This focuses on research, not directly on military strength.) - c. He provides historical examples of nations who have gone to war and established peace. (This implies war leads to peace, which contradicts the idea that military strength is not best.) - d. He focuses on how the country can cooperate to improve the world and warns of the potential for misusing the military. (This highlights cooperation and warns against military misuse, aligning with the argument.) 4. Therefore, the best answer is d. Final answer: d. He focuses on how the country can cooperate to improve the world and warns of the potential for misusing the military.