Which organization is abbreviated NATO?

• A. International Cooperation Organization
• B. North American Trade Organization
• C. North Atlantic Alliance Treaty
• D. North Atlantic Treaty Organization

Answer: (D)

Acronyms like NATO carry clues about what the organization is and where it’s centered. NATO stands for North Atlantic Treaty Organization. It’s a military alliance formed in 1949 that unites countries in North America and Europe to commit to collective defense—if one member is attacked, others consider it an attack on all. The three parts of the name highlight the region (North Atlantic), the binding agreement (Treaty), and the group itself (Organization). The other options mix up terms or misstate the purpose, so they don’t match the official name. Thus, North Atlantic Treaty Organization is the correct expansion for NATO.