Four athletes from Tamil Nadu, Abinaya Rajarajan, Karthik Raja, Hariharan Kathiravan, and Kanista Teena, have been chosen to represent India at the World Athletics U20 Championships in Peru. These athletes will compete in various events, including the 100m, 400m hurdles, and relay races. With previous successes at the Asian level, these athletes are aiming to perform well at the global stage.