Blood Relations

Work backwards from ”my mother”:- husband of my mother = my father- mother of (husband of mymother)=motherofmyfather=mypaternalgrandmother-thewomanwho is... = my paternal grandmother- She is the daughter of (the woman) = She is the daughter of my paternal grandmother. Daughter of paternal grandmother = Father’s sister = Paternal Aunt. The lady is Ranjan’s Aunt. This matches option (4).

”I have no brother or sister” ⇒ ”my father’s son” = ”myself”. Substitute: ”that man’s father is myself (the speaker)”. If the speaker is the father of the man in the photo, the photo is of his son. This matches option (2).