(A) Assembly
(B) Court of International Justice
(C) ** Betterment Committee
(D) Slavery Commission
EXPLANATIONS BELOW
Concept note-1: -In addition, the League of Nations established technical organizations to facilitate international cooperation in specific fields. Among these organizations were the Economic and Financial Organization, the Communication and Transit Organization, the Health Organization, and the Intellectual Cooperation Organization.
Concept note-2: -Soviet Russia and the USA were not a part of the League of Nations. The League of Nations was an organisation formed based on 14 points presented by the then American President Woodrow Wilson during the Paris Peace Process on January 10, 1920.
Concept note-3: -Among the given options to make every nation militarily strong is not the function of League of Nations.
Concept note-4: -Russia was expelled out of League of Nations for invading Finland and USA never joined the league, ironic because it was America who designed it and these were the two major countries who were not members of League of Nations.