Pointing to a photograph, a man says, "I have no brothers or sisters, but the father of the person in the photograph is my father’s son." Who is the person in the photograph?
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For blood relation puzzles, carefully interpret the statements to identify relationships and eliminate options.
The man states, "The father of the individual in the picture is my father's son." Given that the man is an only child, the only possible candidate for his father's son is himself. Consequently, the individual in the photograph is his son.