Which is the largest organization in the world?

• A. World Health Organization
• B. United Nations
• C. International Red Cross
• D. European Union

Answer: (B)

When you think about the largest international organization, the key idea is how many countries belong to it. The United Nations includes nearly every independent nation in the world, giving it a vast membership and a truly global reach. That broad participation makes it the largest in scope and influence, covering a wide range of issues from peace and security to humanitarian aid and sustainable development. The other options play important roles, but they operate on smaller scales: a health-focused agency with many members, a humanitarian network made up of national societies, and a regional bloc of European states. So the United Nations stands out because it brings together the most countries, creating the broadest platform for international cooperation.