Fill in the blank with the correct preposition.
He is physically fit and not averse ______ hard work.

Correct option is B

The correct option to fill in the blank is (b) to.
Detailed Explanation (English):
• “Averse” means unwilling or having a strong dislike for something.
• The correct collocation is averse to + noun/gerund.
• Hence, “not averse to hard work” means he does not dislike hard work and is willing to do it.
Correct sentence:
He is physically fit and not averse to hard work.
Grammatical Rule Used (English):
• Certain adjectives take fixed prepositions (collocations).
• Averse + to (something).
Grammatical Rule Used (Hindi):
• कुछ adjectives के साथ preposition निश्चित (fixed) होता है।
• “averse” के साथ सही preposition to आता है: averse to (किसी चीज़ से परहेज़/नापसंद होना)।
Meanings of the other options:
• (a) Of: shows relation/belonging (का/के)
• (c) From: shows separation/origin (से)
• (d) Towards: shows direction/attitude (की ओर)