Whom did PV Sindhu beat to win the first ever Gold Medal for India in Women's Single Badminton Championship in the final match?

1. A

   Carolina Marin

   (a) Carolina Marín. Sindhu lost the 2016 Rio Olympic final to Marín; that was silver, not the 2019 Worlds gold.

2. B

   Tai Tzu Ying

   (b) Tai Tzu-ying. A frequent rival and world No. 1 in patches; not the opponent Sindhu beat in the 2019 World Championship final.

3. C

   Nozomi Okuhara

   (c) Nozomi Okuhara. At the 2019 BWF World Championships in Basel, Sindhu defeated Okuhara in the women’s singles final for India’s first Worlds gold in that event. (c) Official key.

4. D

   None of these

   (d) None of these. The finalist is named: Okuhara, so “none” fails.

Summary. Official key is (c). P. V. Sindhu’s first World Championship gold (2019, Basel) came against Nozomi Okuhara. Marín is the Rio 2016 final memory, not this gold.