The correct answer is: B. Abhinav Bindra.
Abhinav Bindra was the flagbearer of the Indian contingent at the 2016 Summer Olympics in Rio de Janeiro. He is an Indian former sport shooter who competed in the 10 metre air rifle event. He is the first Indian to win an individual gold medal at the Olympics, and the only Indian to have won an individual gold medal in any sport at the Olympics. He is also the first Indian to win a gold medal in any shooting event at the Olympics.
Narsingh Yadav is an Indian freestyle wrestler who competed in the men’s 74 kg event at the 2016 Summer Olympics. He was initially selected to be the flagbearer of the Indian contingent at the Olympics, but he was replaced by Abhinav Bindra after he was provisionally suspended from the Games for doping.
Deepa Karmakar is an Indian gymnast who specializes in the vault event. She is the first Indian gymnast to qualify for the Olympics in 44 years. She finished fourth in the vault final at the 2016 Summer Olympics, narrowly missing out on a medal.
Sania Mirza is an Indian professional tennis player. She is the first Indian woman to win a Grand Slam title in singles, doubles, and mixed doubles. She is also the first Indian woman to be ranked world No. 1 in doubles. She was not selected to be the flagbearer of the Indian contingent at the 2016 Summer Olympics.