एक आदमी का परिचय देते हुए एक महिला ने कहा कि, "यह मेरी माँ की माँ का इकलौता पुत्र है"। इस महिला का उस आदमी से क्या रिश्ता है?

The correct answer is (D) Niece (Bhanji).

• Logical Principle: Blood relation problems require breaking down statements from the perspective of the speaker and tracing family tree links step by step.
• Step-by-step Deduction: The woman says, "He is the only son of my mother's mother". 'My mother's mother' is the woman's maternal grandmother. The 'only son' of the maternal grandmother is the woman's maternal uncle (Mama). Therefore, the man is the woman's maternal uncle. Consequently, the woman is the daughter of her mother, and since the man is her mother's brother, the woman is the daughter of her uncle's sister, which makes her the niece (bhanji) of that man.
• Verification and Option Contrast: Tracing the generation gap, the man belongs to the mother's generation, while the woman belongs to the daughter's generation. Thus, the woman is the niece of the man. Options (A), (B), and (C) do not match this genealogical derivation.