Explanation:

- Option 1: Kerala

- The International Paragliding Festival in 2020 was organized by the Adventure Sports and Sustainable Tourism Academy (ASSTA) in Kerala.

- Kerala is known for promoting tourism and adventure sports activities, making it a suitable location for such events.

- Option 2: Tripura

- Tripura, in Northeast India, is not widely recognized for paragliding festivals.

- The state is more known for its cultural heritage and biodiversity.

- Option 3: Assam

- Assam, also located in Northeast India, is famous for tea gardens and wildlife, but not specifically for paragliding festivals.

- Adventure tourism is growing, but as of 2020, it was not a notable location for such international festivals.

- Option 4: Uttarakhand

- Known for its hills and adventure sports, Uttarakhand hosts various paragliding activities.

- However, the 2020 International Paragliding Festival was not held here.

Correct Answer: Option 1 Kerala