The correct answer to the question is option 2, Odisha. This is because recently a rare yellow turtle was discovered in Odisha, a state in India. The discovery of this unique turtle has attracted a lot of attention as yellow turtles are extremely rare and are not commonly found in the wild.

Option 1, Uttarakhand, is incorrect because there have been no reports of the yellow turtle being discovered in Uttarakhand. Option 3, Tamil Nadu, and option 4, Arunachal Pradesh, are also incorrect because there have been no reports of the yellow turtle being discovered in these states either.

It is worth noting that the discovery of the yellow turtle in Odisha is significant as it adds to the biodiversity of the region and highlights the importance of conservation efforts. These turtles are a special case of albinism and their unique coloration is the result of a genetic mutation. The sighting of such a rare species is a reminder of the rich and diverse wildlife that exists in various parts of India.