Who had participated in TROPEX-21 (Theatre Level Operational Readiness Exercise)?

A. Indian Navy

B. Indian Army

C. Indian Air Force

D. All of these

Explanation:

Admiral Karambir Singh, Chief of the Naval Staff presided over the debrief of TROPEX-21 (Theatre Level Operational Readiness Exercise) at Kochi. The exercise had commenced in January 2021 involving all three Commands of the Indian Navy, the Tri-Services Command at Port Blair, and elements of Indian Army, Indian Air Force and Coast Guard.