Explanation:

- Correct Answer: Option 4 - Telangana

Dunnapothula Panduga, meaning "festival of bullocks," is celebrated primarily in Telangana. It's a harvest festival showcasing bullock cart races and decorated cattle.

- Option 1 - Tamil Nadu

While Tamil Nadu has its own festivals like Pongal, which also involve cattle, Dunnapothula Panduga is not celebrated here.

- Option 2 - West Bengal

Known for Durga Puja and other regional festivals, West Bengal does not celebrate Dunnapothula Panduga.

- Option 3 - Assam

Assam is famous for Bihu, but not Dunnapothula Panduga.

In summary, Dunnapothula Panduga is distinct to Telangana, celebrated with great enthusiasm by the rural communities.