Explanation:

- Option 1: Itanagar

- Itanagar is the capital of Arunachal Pradesh.

- It is known for its natural beauty and cultural diversity.

- However, Ummatt-aat is not a dance form associated with Itanagar.

- Option 2: Coorg

- Coorg, also known as Kodagu, is a district in Karnataka.

- This region is famous for its coffee plantations and beautiful landscapes.

- Ummatt-aat is a traditional folk dance form performed in Coorg by the Kodava community.

- Option 3: Kasauli

- Kasauli is a small hill station in Himachal Pradesh.

- It's known for its scenic views and colonial architecture.

- Ummatt-aat is not a dance form related to Kasauli.

- Option 4: Gangtok

- Gangtok is the capital of Sikkim.

- It’s a popular destination for its monasteries and panoramic views of the Himalayas.

- Ummatt-aat is not linked to Gangtok.