What is the expansion of NASA?

The correct answer is C, National Aeronautics and Space Administration. NASA is the civilian space agency of the United States, established in 1958 after the launch of Sputnik, with its headquarters at Washington DC. It grew out of an older body for aeronautical research, which is why aeronautics appears in the name before space. Its famous programmes include Apollo, which landed humans on the Moon, the Space Shuttle, the Hubble and James Webb telescopes, the Mars rovers and the Artemis programme.

Option A rearranges the words into Agency of Space Administration, which is not the official name. Option B replaces National with Navigational, a word that belongs to satellite navigation rather than to the agency. Option D is the closest trap because it ends with Agency instead of Administration; the last word of the name is Administration, and getting that single word right is what the question tests.