Select the most appropriate ANTONYM of the given word.
Irrational

Correct option is C

The correct antonym of the given word is (c) Reasonable.
Irrational: Not logical or reasonable; lacking good judgment. (अविवेकी, तर्कहीन)
Example: His fear of the dark was completely irrational.
Reasonable: Based on or using good judgment and logic. (विवेकपूर्ण, तार्किक)
Example: Her demand for extra time seemed reasonable.
Synonyms: Illogical, Senseless, Unreasonable, Absurd
Antonyms: Logical, Reasonable, Rational, Sensible
Meanings of all the other given options:
· (a) Gloomy – Sad or depressed (उदास)
· (b) Illogical – Not logical (तर्कहीन) – this is a synonym, not antonym
· (d) Peaceful – Calm and free from disturbance (शांत)