Subei, Kachela, and Jamuda, the three sites in the undivided Koraput district of Odisha, are famous for?

The Correct answer is Option 4. 

Key Points

•  Subei, Kachela, and Jamuda are archaeological sites in the undivided Koraput district of Odisha, which are known for the discovery of Neolithic tools. These sites have yielded significant evidence of prehistoric human settlements, including stone tools that belong to the Neolithic period. The findings from these sites provide valuable insights into the early human activities and the development of tool-making techniques in the region. Hence, the correct answer is Option 4 (Neolithic tools).