Answer : 3. "Ladakh"
Explanation :

Recently, five Army personnel, including a JCO and four jawans, died when their T-72 tank got stuck in the Shyok River near Nyoma-Chushul, Eastern Ladakh, due to a sudden water level rise. Despite rescue efforts, strong currents prevented their rescue. The T-72 tanks, initially designed by the Soviet Union and later modernized as T-72 Ajeya, were deployed in Ladakh post-2020 Galwan clash.