Who was the first Indian woman to qualify for the final of individual track event in Olympics?

The correct answer is A. P.T. Usha.

P.T. Usha is an Indian former track and field athlete who was the first Indian woman to qualify for the final of an individual track event at the Olympics. She competed in the 400 metres hurdles at the 1984 Summer Olympics in Los Angeles, where she finished fourth in the final. She also won a silver medal in the 4 × 400 metres relay at the 1986 Asian Games.

B. M.D. Valsamma is an Indian former track and field athlete who specialized in the 400 metres and 800 metres events. She won a gold medal in the 4 × 400 metres relay at the 1982 Asian Games and a silver medal in the same event at the 1986 Asian Games.

C. Shiny Abraham is an Indian former track and field athlete who specialized in the 100 metres and 200 metres events. She won a gold medal in the 4 × 100 metres relay at the 1998 Asian Games.

D. Arti Saha is an Indian former track and field athlete who specialized in the 100 metres and 200 metres events. She won a bronze medal in the 4 × 100 metres relay at the 1998 Asian Games.