Which of these factors played a major role in preventing a war between the Soviet Union and the United States?

A couple examples of preventing a war in the cold war was nuclear treatys limiting nukes like the Intermediate-Range Nuclear Forces Treaty

Signed on 8th Dec 1987 In the Whitehouse other ways are diplomatic discussions and proxy wars so like in Vietnam USSR supported and aided the communist revolution without directly declaring war on the USA

answer; i believe the correct answer is (favorable balance);

offline recommendation systems option b

because recommendation systems produce a list of two ways

1. through collaborative filtering

or

2. through content-based filtering