(A) ** Navies
(B) Armies
(C) Air Force
(D) Armoured vehicles
EXPLANATIONS BELOW
Concept note-1: -Between 1921 and 1922, the world’s largest naval powers gathered in Washington for a conference to discuss naval disarmament and ways to relieve growing tensions in East Asia. In the wake of World War I, leaders in the international community sought to prevent the possibility of another war.