Answer : 2. "छोलिया"
Explanation :

1. Chholiya dance is a sword dance, meant to depict the martial arts traditions of the Kumaoni tribe.

2. This dance form is over a thousand years old, and is performed during local Rajput weddings.

3. There are four folk dances of Uttarakhand state.

- Chholiya: It is a sword dance that portrays the martial arts traditions of the Kumaoni tribe.

- Jhoda: It is a circular dance which is popular in both Garhwal and Kumaon regions.

- Tandi: It is a fast-paced dance which is popular in the Garhwal region.

- Langveer: It is a dance that depicts the stories of heroic warriors.