All of them are correct except the first one
The correct answer of the given question above would be ELECTED REPRESENTATIVES. In government by popular consent, the group that holds state power is the elected representatives. Elected representatives are also known as elected democracy. These are representatives who are being chosen through election. Hope this helps.
B, the UN
The League of Nations was after WWI
Warsaw pact was after WWII but during the Cold War against the Societ Union
World trade organization- 1990s regulated international trade and also when globalization was getting bigger
Hope this helps