Pointing to a girl, Joseph said, "Her mother is my wife's sister." How is Joseph related to the girl?

FatherCorrect answerYour answerBrother-in-lawCorrect answerYour answerGrandfatherCorrect answerYour answerUncleCorrect answerYour answer

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CorrectNot quiteAnswer D

Correct answer: D

The girl's mother is the sister of Joseph's wife, so the girl's aunt is Joseph's wife.
Joseph is the husband of the girl's aunt, and an aunt's husband is an uncle.

Worth noting

The question asks for Joseph's relation to the girl, not hers to him. Brother-in-law is what Joseph is to the girl's mother.

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Explanation