Pointing to a photograph, a man said, "She is the daughter of my grandfather's only son." How is the woman related to him?
- A. His mother
- B. His sister
- C. His aunt
- D. His niece
Explanation
The grandfather's only son must be the speaker's own father, so the woman is his father's daughter, which makes her his sister. The chain is easiest to follow by resolving the innermost phrase first and working outwards. Answering aunt comes from treating the grandfather's only son as an uncle, which the word only rules out.
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