Choose the word that is opposite in meaning to the given word.
Adequacy

The correct answer is (d) Dearth.
Explanation:
"Adequacy" means a sufficient amount or being enough.
Hindi meaning: पर्याप्तता
Synonyms: sufficiency, competence, suitability.
Antonyms: inadequacy, insufficiency, incompetence.
The antonym would be "dearth," which means a scarcity or lack of something.
Meanings of all options:
· Opulence: Great wealth or luxury.
· Rational: Based on reason or logic.
· Surplus: More than what is needed or used.
· Dearth: A scarcity or lack of something.