Pointing to a person, a man said to a woman, "His mother is the only daughter of your father." How is the woman related to that person?

Introduction / Context:

This blood-relation question presents a short dialogue and asks you to infer the relationship between a woman and a person in front of her. Such problems rely on translating the spoken description into a simple family relationship diagram. The key idea here is the phrase “only daughter of your father”.

Given Data / Assumptions:

• A man is speaking to a woman while pointing to a person.
• The man says: “His mother is the only daughter of your father.”
• The pronoun “his” refers to the person being pointed at.
• We are asked: How is the woman related to that person?
• We assume the father mentioned is the woman's biological father and that “only daughter” means he has exactly one daughter.

Concept / Approach:

The central phrase is “only daughter of your father”. Since the man is addressing the woman, her father's only daughter must be the woman herself, because if there were any other daughters, the term “only” would not be correct. Once we identify the mother of the person in the photograph as the woman herself, it becomes straightforward to see what relationship she has with him.

Step-by-Step Solution:

Verification / Alternative check:

We can restate the sentence by substituting “the woman” for “only daughter of your father”: “His mother is the woman.” This clearly shows that the woman occupies the role of mother for the person referenced. No other interpretation is consistent with the word “only” in the original statement.

Why Other Options Are Wrong:

“Aunt” would apply if the woman was a sister of the person's father or mother, but the statement clearly says she is the mother herself.

“Wife” would describe her relationship to another adult, not to the person being pointed at.

“Daughter” reverses the relationship, suggesting that the woman is the child of the person in the picture, which contradicts the information given.

Common Pitfalls:

Examinees sometimes confuse whose father or mother is being referred to and mis-assign the “only daughter” label. Keeping track of pronouns (“your”, “his”) and explicitly replacing them with the correct names in a rough diagram helps avoid such logical slips.

Final Answer:

The woman is related to the person as his mother.