Explanation:

All of the above are correct.

• A large scale Joint Military exercise ‘Exercise Kavach’ involving assets of Indian Army, Indian Navy, Indian Air Force and Indian Coast Guard is being conducted under the aegis of the Andaman and Nicobar Command (ANC), the only Joint Forces Command of the country.
• The exercise would involve participation and deployment of elements of Army’s Amphibious Brigade along with supporting forces including Special Forces of Navy, Armour/Mechanised components, Naval Ships comprising Destroyers, ASW Corvettes and Landing Ships with ship-borne helicopters of Eastern Naval Command and ANC, Jaguar Maritime Strike and Transport aircrafts from Indian Air Force and assets of Coast Guard.
• The joint force would execute multi domain, high intensity offensive and defensive manoeuvres in the Andaman Sea and Bay of Bengal and carry out amphibious landing operations, air landed operation, helicopters-borne insertion of Special Forces from sea culminating in tactical follow-on operations on land.

Hence option 4th is correct.