Correct answer C). Roosevelt promoted the Neutrality Policy of the United States throughout the war
Following Japan’s attack on Pearl Harbor, the United States declared war. Letter A is not correct because FDR did find it hard to keep U.S. neutrality. Letter B is not correct because FDR did not always enforce the Neutrality Acts. Letter D is not correct because FDR often publicly disagreed with the isolationist. Letter C is correct because Roosevelt promoted the Neutrality Policy of the United States throughout the war
Hence, the correct answer would be option C.