The correct answer is Tamil Nadu.

• The Adichanallur archaeological site is located in the state of Tamil Nadu.
  • Adichanallur is an archaeological site in the Thoothukudi district in Tamil Nadu.
• India has been the site of a number of very important archaeological finds.
• Korkai, the capital of the Early Pandyan Kingdom, is located about 15 km from Adichanallur.

• The history of India begins with the birth of the Indus Valley Civilization (IVC), also known as the Harappan Civilization.
• It flourished around 2,500 BC, in the western part of South Asia, in contemporary Pakistan and Western India.
• The Indus Valley was home to the largest of the four ancient urban civilizations of Egypt, Mesopotamia, India, and China.
• In the 1920s, the Archaeological Department of India carried out excavations in the Indus valley wherein the ruins of the two old cities, viz. Mohenjodaro and Harappa were unearthed.
• In 1924, John Marshall, Director-General of the ASI, announced the discovery of a new civilization in the Indus valley to the world.