The correct answer is A. Pullela Gopichand.
Pullela Gopichand is an Indian badminton player and coach. He is the chief national coach of the Indian badminton team and the founder of the Gopichand Badminton Academy in Hyderabad. He is a former world number one and the only Indian to have won the All England Open Badminton Championships. He is also the first Indian to win a medal at the Olympics, winning the silver medal in the men’s singles event at the 2001 Summer Olympics.
P.V. Sindhu is an Indian badminton player. She is the current world champion and the first Indian to win the title. She is also the first Indian to win a silver medal at the Olympics, winning the silver medal in the women’s singles event at the 2016 Summer Olympics. She is currently ranked number two in the world by the Badminton World Federation.
Pullela Gopichand has been coaching P.V. Sindhu since she was 10 years old. He has been instrumental in her success, and she has credited him with her development as a player. Gopichand is a highly respected coach, and he is considered to be one of the best in the world. He has coached many other successful players, including Saina Nehwal and Kidambi Srikanth.
A. Pullela Gopichand is the correct answer because he is the current coach of P.V. Sindhu. He is a highly respected coach, and he has been instrumental in her success.