Pointing to a photograph, a woman said, "This man is the son of the father-in-law of my husband."
How is the woman related to the man in the photograph?
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → Sister
The relation is unwound from the woman’s end, one link at a time:
“Father-in-law of my husband”: the father of the husband’s wife, that is, the woman’s own father
“Son of … my father”: the son of her father is her brother

The man is her brother, and she is a woman, so she is his sister.