Correct option is C
The correct antonym of the given word is (c) sorrow.
Given word (Felicity): It means great happiness, joy, or pleasantness. (Hindi meaning: खुशी, आनंद)
Example: She spoke with felicity after winning the award.
Correct answer word (Sorrow): It means deep sadness or grief. (Hindi meaning: दुःख, शोक)
Example: He was filled with sorrow after the loss.
Synonyms (felicity): happiness, joy, delight, bliss.
Antonyms: sorrow, sadness, misery, grief.
Meanings of all the other given options:
• (a) Jubilation: great joy and celebration (हर्षोल्लास)
• (b) Pessimism: belief that bad things will happen (निराशावाद)
• (d) Weakness: lack of strength/power (कमज़ोरी)