PART A: Which statement expresses the central idea of the text? A. The atmosphere of the Cold War led to some of the most important technological and scientific discoveries to date. B. While tension was high between many nations during the Cold War, leaders were able to keep life relatively normal for citizens in their countries. C. While the Cold War lasted several decades, it had less severe effects because there was no actual violence. D. The Cold War was a time of conflict and fear between nations that affected America's relationship with many other countries.