What word means 'fundamental; basic; essential'?

• A. Anterior
• B. Primary
• C. Prime
• D. Principal

Answer: (B)

Fundamental; basic; essential describes something that is at the core or building block of a concept, the part you most need to understand first. Primary fits this sense exactly, because it’s commonly used to mark the main or foundational aspect of something—your primary goal, the primary element, the primary concern. That emphasis on being first in importance or in a basic sense makes it the best choice for “fundamental; basic; essential.”

Anterior means in front or earlier in time, which isn’t about importance. Prime can mean first in order or of high quality, but it often carries nuances of timing or excellence rather than the foundational nature. Principal also means main or most important, but it’s more about overall significance in a broader sense rather than the fundamental, building-block aspect.

So the word that best captures the idea of fundamental; basic; essential is primary.