Looking at a picture of Suraj, Mr. Gaurav said, "He is the son of my paternal grandfather's only son." How is Gaurav related to Suraj in the picture?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. Brother.
The family tree:

So, Gaurav' is brother of Suraj.
Hence, the correct answer is brother.