Explanation:

- PV Sindhu: Correct Answer

- PV Sindhu became the first Indian badminton player to win the BWF World Tour Finals in December 2018. She achieved this milestone by defeating Nozomi Okuhara of Japan in the final, securing her place in history as a top-performing athlete in Indian badminton.

- Aparna Popat:

- Aparna Popat is a former Indian badminton player known for her achievements in the late 1990s and early 2000s. However, she did not win the BWF World Tour Finals in 2018.

- Jwala Gutta:

- Jwala Gutta is an accomplished Indian badminton player, primarily known for her success in women's and mixed doubles. She has not won the BWF World Tour Finals.

- Saina Nehwal:

- Saina Nehwal is another prominent Indian badminton player who has achieved significant milestones, including being ranked world No. 1. Nevertheless, she did not win the BWF World Tour Finals in 2018.