The correct option is C The Cold War took the form of a weapons race.
The Cold War was a fight between two ideologies: communism and capitalism. The USSR represented communism and the USA represented capitalism. The Cold war was fought in a hidden manner. This means no actual war happened between the US and the USSR. They never acknowledged the conflict they had between them directly. Instead they pulled other countries into fighting their war. These wars are known as proxy wars. The Cold War took the form of a weapons race. The USA established military organisations across the globe to consolidate world countries into its fold to fight the USSR.