What legislation would the authors of the excerpt most likely support?

The Lend-Lease Act would be supported by the authors of the excerpt primarily because it represented a significant shift in American foreign policy during a time of global conflict, specifically World War II. The act allowed the U.S. to supply military aid to its allies, including Great Britain, the Soviet Union, and China, thereby enabling them to fight against the Axis powers without the United States entering the war directly at that time.

The authors likely favored this legislation because it demonstrated a commitment to support allies in their struggle against tyranny while still maintaining a degree of distance from direct military involvement. It reflects a recognition of the necessity to assist nations that were fighting against fascist regimes, aligning with a broader sentiment of increasing engagement while avoiding the full-scale involvement that characterized World War I.

In contrast, the other options pertain to different aspects of U.S. policy or legislation that either focused on domestic issues (like the Social Security Act) or on neutrality and isolationism (as seen in the Nye Act and Neutrality Act), which would not resonate with the authors' support for a more interventionist approach represented by the Lend-Lease Act.