Explanation:

- Option 1: Thimphu, Bhutan

- This is the correct answer. The SAFF Under-15 Women’s Championship in 2018 was indeed held in Thimphu, Bhutan, where India emerged victorious.

- Option 2: Nanjing, China

- Irrelevant. Nanjing is known for hosting other international events, such as the 2014 Youth Olympic Games, not the SAFF Under-15 Women’s Championship.

- Option 3: Hangzhou, China

- Also unrelated. Hangzhou is famous for other sporting events like the Asian Games and various cultural events.

- Option 4: Jakarta, Indonesia

- Not relevant. Jakarta is known for hosting the Asian Games and other regional sporting events, not the SAFF Under-15 Women’s Championship.