To answer this question, the user needs to know about the history of Olympic games and its participants. The user needs to know about the first Indian athlete who represented India in the Olympic Games.

Option A: Norman G Pritchard is the right answer. He was the first Indian to participate in the Olympic Games. He represented India in the 1900 Summer Olympics held in Paris, France. He won two silver medals in athletics, making him the first Indian to win a medal at the Olympics.

Option B: Dilip Kumar is a famous Indian actor who has nothing to do with the Olympic Games.

Option C: Som Nath Sharma was the first Indian to receive the Param Vir Chakra, India's highest military decoration, for his bravery in the Indo-Pakistani War of 1947. He had no association with the Olympic Games.

Option D: Puneet Arora is an unknown person, and there is no record of his participation in the Olympic Games.

Therefore, the correct answer is:

The Answer is: A. Norman G Pritchard