Explanation:

- The Adivasi Mela is an annual tribal fair that showcases the culture, traditions, and products of indigenous communities.

- It is known for promoting tribal art, crafts, food, and heritage.

- The 2021 edition of the fair began on January 26th.

- Option 1: Bhubaneswar - This is the correct answer. The Adivasi Mela is traditionally held in Bhubaneswar, the capital city of Odisha, which is known for its rich tribal culture.

- Option 2: Kolkata - Kolkata, the capital city of West Bengal, is not typically associated with hosting the Adivasi Mela.

- Option 3: Nashik - Located in Maharashtra, Nashik is known for its religious significance and vineyards but not for hosting this particular fair.

- Option 4: Pune - Pune, another city in Maharashtra, is not the venue for the Adivasi Mela.

- Option 5: None of these - This option is incorrect given that Bhubaneswar is listed.

Correct Answer: Option 1: Bhubaneswar