Sources C and D provide some accurate reasons for the weakness of the League of Nations, but ignore many other important factors: Source C correctly identifies that the absence of powerful countries like the US weakened the League and that Britain and France's fear of war led them not to act against aggressors. Source D validly argues that nations prioritized their own interests over collective security. However, neither source mentions other significant reasons like the League's lack of an army, indecisive decision-making, and the economic problems faced by members after World War 1. The sources also have limitations, as C is a student essay that may oversimplify, and D's title suggests an agenda to criticize international cooperation like