In the following question, out of the four given alternatives, select the one which best expresses the meaning of the given word.
Cardinal

Correct option is A

· Cardinal means "most important or fundamental."
· Correct answer: "Essential" (which means absolutely necessary).
· Other options explained:
· Auxiliary – additional but not primary.
· Unnecessary – opposite of cardinal.
· Negligible – something insignificant, opposite of cardinal.
Example : Honesty is a cardinal principle in leadership. Water is essential for survival.