Correct option is C
The correct antonym of the given word is (c) Reveal.
Conceal: To hide or keep something secret. (Hindi: छिपाना)
Example: He tried to conceal his emotions during the interview.
Reveal: To make something visible or known. (Hindi: प्रकटकरना)
Example: The clouds cleared to reveal a beautiful sunset.
Synonyms of Conceal: hide, cover, mask, veil
Antonyms: disclose, expose, uncover, reveal
Meanings of all the other given options:
· (a) Watch: To observe attentively (देखना)
· (b) See: To perceive with the eyes (देखना)
· (d) Hide: To keep out of sight (छिपाना) — This is actually a synonym, not an antonym.