Multiple Choice Question

What caused the dramatic shift in the American public's opinion regarding military intervention overseas, as represented in the graph?
A.
German U-boats attacked and sank a US civilian ship.

B.
The Germans attacked the United States on its own soil.

C.
The Japanese attacked the United States on its own soil.

D.
The Japanese navy attacked and sank a US civilian ship.

Based on the given information, the graph and the provided options, the most likely answer would be option A. German U-boats attacked and sank a US civilian ship.