Explanation:

- Correct Answer: Option 1: Hornbill Festival

- The Hornbill Festival was initiated by the Government of Nagaland in 2000.

- It aims to encourage interaction among the numerous tribes of Nagaland and promote the rich cultural heritage of the state.

- The festival is held annually in the first week of December in the Kisama Heritage Village near Kohima, Nagaland.

- It features traditional dances, music, crafts, and indigenous games.

- Option 2: Nazu Festival

- Nazu Festival is celebrated by the Pochury tribe of Nagaland.

- It is typically observed in the pre-sowing season, around February.

- Option 3: Gaan-Ngai Festival

- The Gaan-Ngai Festival is celebrated by the Zeliangrong community, primarily in Manipur.

- It is a post-harvest festival, usually occurring in December or January.

- Option 4: Nuakhai Festival

- Nuakhai is primarily celebrated in Odisha and some regions of Chhattisgarh and Jharkhand.

- It is an agricultural festival marking the harvest season.