Correct option is C
The correct synonym of the given word is
(c) Childish.
Juvenile means
young, not fully grown, or relating to children/adolescents. It can also describe behaviour that is
immature or child-like. (Hindi meaning: किशोर/बाल-संबंधी/अपरिपक्व)
Example: The court handles juvenile offenders differently from adults.
Childish: means
behaving in an immature way; typical of a child rather than a mature person. (Hindi meaning: बचकाना/अपरिपक्व)
Example: It was childish to refuse to apologize over such a small issue.
Synonyms: youthful, immature, adolescent, childlike.
Antonyms: adult, mature, grown-up, responsible.
Meanings of all the other given options:
·
(a) Adult: fully grown; mature (वयस्क)
·
(b) Wise: showing good judgement; sensible (बुद्धिमान/समझदार)
·
(d) Mature: fully developed; emotionally grown-up (परिपक्व)