Suresh’s sister is the wife of Ram. Ram is Rani’s brother. Ram’s father is Madhur. Sheetal is Ram’s grandmother. Rema is Sheetal’s daughter-in-law. Rohit is Rani’s brother’s son. Who is Rohit to Suresh ?

This means that Rohit is Suresh’s sister’s son-in-law. Son-in-law is a man who is married to a woman whose father is the person being referred to. In this case, Rohit is married to Suresh’s sister, so he is Suresh’s nephew.

The other options are incorrect because:

• Option A, Brother-in-law, is incorrect because Rohit is not married to Suresh’s sister.
• Option B, Son, is incorrect because Rohit is not Suresh’s biological son.
• Option C, Brother, is incorrect because Rohit is not Suresh’s biological brother.