Correct Answer & Explanation
Option B
Let's analyze the man's statement:
• "I have no brother or sister." This means the man is an only child.
• "My father's son" can only be the man himself, as he has no siblings.
• "That man's father is my father's son." Substituting "my father's son" with "I" (the man), the statement becomes "That man's father is I."
• This means the man in the photograph is the son of the speaker.
• Therefore, it was his son's photograph.