Answer : 3. "Visakhapatnam"
Explanation :

Defense Minister Rajnath Singh will officially inaugurate the 12th edition of MILAN 2024, a major naval exercise conducted by the Indian Navy in Visakhapatnam. On this occasion, he will also inaugurate Milan Village at Eastern Naval Command Base. The city of Visakhapatnam is all set for the official launch of MILAN 2024, the largest multinational naval exercise of the Indian Navy.