Arun said, “This girl is the wife of the grandson of my mother.” Who is Arun to the girl?

The correct answer is: D. Father-in-law

Arun’s mother has a grandson. This grandson is married to the girl. This means that Arun is the girl’s father-in-law.

Here is a brief explanation of each option:

• A. Father – This is incorrect because Arun’s mother has a grandson, not a son.
• B. Grandfather – This is incorrect because Arun’s mother has a grandson, not a great-grandson.
• C. Husband – This is incorrect because Arun is not married to the girl.
• D. Father-in-law – This is the correct answer because Arun’s mother has a grandson, who is married to the girl.