Rani said, “The man in the photo is my mother’s son-in-law.” Who is the man to Rani?

Correct — A.
Rule: a son-in-law is the husband of one's daughter.

"My mother's son-in-law" becomes "my mother's daughter's husband".

Rani is her mother's daughter, so the man in the photo is Rani's husband → option (a).

Why the others are wrong

• (b)
  Father — Father is the mother's husband, not her son-in-law. A son-in-law stands one generation below the mother, in Rani's own generation.
• (c)
  Uncle — An uncle sits in the mother's own generation, as her brother or brother-in-law. A son-in-law sits one generation below her, married to her daughter.
• (d)
  Cousin — A cousin is the child of Rani's aunt or uncle. Son-in-law means married to her mother's daughter, which cousin does not describe.

Spoken relations are solved by replacing each relation word with its definition, starting from the speaker.

"My mother's son-in-law" becomes "my mother's daughter's husband".

Rani's mother's daughter is Rani herself or a sister of Rani, so the man is married to one of them. The options decide which.

Key facts

• Son-in-law: the husband of one's daughter.
• A mother's daughters are the speaker, if female, and the speaker's sisters.
• Brother-in-law: a sister's husband, or a spouse's brother.

Common traps

• Stopping at "mother's" and choosing Father, the mother's husband.
• Forgetting that Rani is herself her mother's daughter.

No directly related past PYQ was found.