Explanation:

- Poush Mela is an annual fair and festival held in Shantiniketan, West Bengal.

- It celebrates local artisans and showcases folk dances, music, food, and culture of West Bengal.

- Option 1: Gujarat - Known for events like the Rann Utsav, which showcases local culture, but not related to Poush Mela.

- Option 2: West Bengal - Correct. Poush Mela is associated with the cultural heritage of this state.

- Option 3: Rajasthan - Known for its vibrant festivals like the Pushkar Camel Fair.

- Option 4: Uttarakhand - Hosts events like the Kumbh Mela, but not Poush Mela.