Answer:
b
I got my answer off usa test prep
<span>ver 116,000 U.S. citizens died in World War I, making it the third bloodiest war in U.S. history behind World War II and the U.S. Civil War. Though the reasons for the United States’ entry into World War I are many, one of the primary reasons was the Zimmerman telegram, a communique sent from Germany to Mexico, but intercepted and deciphered by British code breakers. The Zimmerman telegram threatened the U.S. territories, thus shifting public sentiment in favor of the Allied Powers of Great Britain, France and Russia.</span>
This quote comes from the now famous Four Freedoms speech, delivered by Roosevelt as the State of the Union address on January 6, 1941. The international context was very negative. Hitler and his Axis allies were winning in Europe. Britain was greatly menaced and the Japanese were gearing up for all-out war in the Pacific and in Asia.
Roosevelt, aware that scientific progress had eliminated the physical advantage of the USA being separated from Europe and Asia by such vast expanses of water had been arming and funding the British for years and had also increased military spending and the Navy in order to keep Japan at bay.
He knew that once Hitler had conquered Europe and Japan had conquered the East, all the populations and resources of these vast reasons would be used to directly attack the USA, which would eventually find itself in numeric inferiority so in order to prevent such a dark future he chose to send weapons, supplies and money to the British.