Blood relations – mother’s only son → his son: Pointing to a boy in a photograph, Akhil says, "He is the son of my mother's only son." How is Akhil related to that boy?

Introduction / Context:
We translate "my mother's only son" to identify a unique male: if Akhil is male, he is that only son. Then the boy is the son of that person.

Given Data / Assumptions:

• Akhil is male.
• "My mother's only son" ⇒ Akhil himself (unique).
• The boy is the son of that only son.

Concept / Approach:
If the boy is the son of Akhil (the only son), then Akhil is the boy's father.

Step-by-Step Solution:

Verification / Alternative check:
If "only son" were another male, Akhil would not be male or would be a different child, contradicting the naming convention used in such puzzles.

Why Other Options Are Wrong:
Uncle/brother/cousin/grandfather describe other branches or generations not supported by the statement.

Common Pitfalls:
Overlooking the exclusivity of "only" and erroneously placing Akhil as a sibling of that only son.

Final Answer:
Father