Pointing towards a person in the photograph, Mohit said, “he is the husband of the only daughter of the father of my sister’s brother.” How is that person related to Mohit?
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → Brother-in-law
A chain of relations is read from the end nearest the speaker (“my”), one link at a time.
My sister’s brother — a brother of Mohit’s sister is Mohit himself or his brother; either way he is a child of Mohit’s parents.
The father of my sister’s brother — so this is Mohit’s father.
The only daughter of that father — Mohit’s father’s only daughter is Mohit’s sister.
The husband of the only daughter — the man in the photograph is the husband of Mohit’s sister.

A sister’s husband is a brother-in-law.