Which of these countries is NOT a member of New Commonwealth of Nations?

The country that is NOT a member of the New Commonwealth of Nations is Rwanda. The Commonwealth of Nations is an international organization made up of countries that were formerly part of the British Empire. The organization promotes democracy, human rights, economic development, and cultural exchange among its member countries. Papua New Guinea, Sri Lanka, and Grenada are all members of the Commonwealth of Nations, but Rwanda is not. Rwanda was never a part of the British Empire, so it is not eligible to be a member of the Commonwealth of Nations.