Answer: B, The lend-Lease Act
Explanation: The Lend-Lease Act was a law passed by the US Congress in 1941 that allowed the President to provide aid, in the form of loans or leases, to any country deemed vital to the defense of the United States. This law provided a way for the United States to provide military and economic support to its allies without becoming directly involved in the war. The Lend-Lease Act was an important step for the United States in helping to protect its allies and eventually leading to its entry into World War II.