The correct answer is option A. Is funded only by voluntary dues
This statement is the most accurate in the context of the United Nations. The UN is indeed funded by its member states, and while the contributions are assessed based on the economic strength of each country, they are in a sense "voluntary" as the UN does not have a mechanism to enforce payment.
Option B is incorrect because, while the UN can establish international laws through its resolutions, it does not have direct authority to enforce them; this is typically the responsibility of individual sovereign states.
Option C is not applicable to the UN as it does not have its own military. Peacekeeping forces are contributed by member nations on a voluntary basis.
Option D is also incorrect as the primary intention of the UN is not to promote international trade, but rather to maintain international peace and security, develop friendly relations among nations, achieve international cooperation, and be a centre for harmonizing the actions of nations.