Survey Question to Americans: Should the United States enter into World
War II?
Survey Responses:
September December
1939 1941
YES
42% 91%
NO
48% 7%
No opinion 10%
2%
What statement BEST explains the changes seen in the chart?
O A. The attack on Pearl Harbor changed the vast majority of opinions
about staying out of World War II.
OB. Germany's attack on Great Britain convinced Americans that it was
time to enter World War II.
O c. With the possibility of Great Britain being defeated by Germany,
Americans wanted to join World War II.
O D. With President Roosevelt's growing popularity, the majority opinion
in the country was to join World War II.