Option A. a military alliance made up of multinational democracies .
Explanation:
- The western alliance was formalised into an organization the North Atlantic Treaty Organisation ( NATO ) , which came into existence in April 1949. It was an association of twelve states known as multinational democracies.
- Whicj declaref that armed attack on any one of them in Europe or Noth America would be regarded as an attack on all of them .
- Each of these would be obliged to help each other.
With the breakage of warsaw pact , the countries of East Europe also joined NATO as a result of which its number has gone up to 28 and Russia is its participatory member.
C I’m not 100% sure though I could be wrong
