Correct answer: A. General Assembly
Explanation: Correct answer: A, the General Assembly. The United Nations has six principal organs established by its Charter: the General Assembly, Security Council, Economic and Social Council, International Court of Justice, Secretariat, and Trusteeship Council. The General Assembly is the main deliberative body, where representatives of all UN member states participate. B is wrong because the World Bank is a separate international financial institution, not a principal UN organ. C and D are sports organizations, not UN organs. The wording “principal organ” is important: it refers to bodies formally recognized in the UN Charter. Memory cue: the General Assembly is the broad forum where all member states are represented.