Integral is best defined as which of the following?

• A. Fundamental; essential
• B. Of the utmost importance
• C. Necessary
• D. Optional

Answer: (A)

The idea tested is how essential or indispensable a part is to a whole. When something is described as integral, it means it is a fundamental piece that the whole depends on; you can’t do without it without breaking the system. That’s why “fundamental; essential” is the best fit: it captures the sense of being an indispensable, central part. Saying something is merely “necessary” is closer but weaker, and “optional” is the opposite, while “of the utmost importance” overemphasizes priority in a way that isn’t inherent to the term.