Pointing to a photograph, Swati says: “He is the uncle of my brother’s sister.” How is the person in the photograph related to Swati?

Introduction / Context:
Photograph-based kinship questions rely on consistent parsing of phrases like “my brother’s sister.” Typically, “my brother’s sister” refers to the speaker herself (assuming full siblings). We must confirm that interpretation and then map “uncle of my brother’s sister” back to the speaker’s relationship with the man in the photograph.

Given Data / Assumptions:

• Speaker: Swati.
• Phrase: “my brother’s sister.”
• Standard meaning of “uncle”: brother of a parent (paternal or maternal), or spouse of a parent’s sister.
• No trick usage of half-/step-siblings unless explicitly mentioned.

Concept / Approach:
Reduce nested possessives. “My brother’s sister” in an ordinary family where Swati and her brother share the same parents denotes Swati herself. Thus the sentence becomes “He is the uncle of me,” i.e., “the man is my uncle.” We then verify this against all alternatives.

Step-by-Step Solution:

Verification / Alternative check:
If Swati had meant a different sister (e.g., step-/half-), the puzzle would normally specify that. In typical reasoning tests, the unmarked term implies the usual full-sibling relation. Hence the direct simplification is valid.

Why Other Options Are Wrong:

• Father-in-law: Would imply Swati is married and the man is her spouse’s father—no such clue is given.
• Brother: That would read “He is the brother of my brother’s sister,” which would reduce to “He is my brother,” but the prompt says “uncle of …,” not “brother of …”.
• Grand father: A grandfather is one generation above parents; the statement uses “uncle,” not “grandfather.”
• None of these: Unnecessary because “uncle” fits precisely.

Common Pitfalls:

• Overthinking “brother’s sister.” In standard usage, it is the speaker herself.
• Confusing “uncle” with “brother-in-law.” “Uncle” refers to the parental generation, not the sibling generation.

Final Answer:

uncle