The options of the question are, A) FBI, B) CIA, C) NRA, D) FDA.
The correct answer is B) the C.I.A.
The organization that the United States employed during the Cold War to work covertly in Communist countries was the C.I.A.
The Central Intelligence Agency or C.I.A. is an independent government agency. Its main responsibility is to provide information and intelligence on national security issues to the government decision makers. The covert activities the agency does are to prevent any situation and maintain the security of the nation. During the Cold War, the U.S. government employed the CIA to work covertly in Communist countries.