To answer this question, you need to know the name of the festival celebrated in Nepal that is equivalent to Diwali in India.
Option A) Nepal - This option is correct. Diwali is known as Tihar in Nepal. Tihar is a five-day festival celebrated in Nepal, which is equivalent to Diwali in India. It is one of the most important festivals in Nepal, and it involves various rituals, worship of different animals, and the lighting of oil lamps.
Option B) Bhutan - This option is incorrect. Diwali is not known as Tihar in Bhutan.
Option C) China - This option is incorrect. Diwali is not known as Tihar in China.
Option D) Korea - This option is incorrect. Diwali is not known as Tihar in Korea.
The correct answer is Option A) Nepal. This option is correct because Diwali is known as Tihar in Nepal.