Umang said to Uma – “You are wife of the grandson of my mother”. Who is Umang to Uma?

Correct option is C

Let's break down the relationship step by step:
1. Umang says to Uma: "You are the wife of the grandson of my mother."

2. The "grandson of my mother" refers to Umang's son because Umang's mother’s grandson would be Umang's son.
3. If Uma is the wife of Umang's son, then Umang is the father-in-law of Uma.
Therefore, Umang is (c) Father-in-law to Uma.