Question

how did roosevelts lend - lease act shift us foreign policy away from isolationism?
o it lent arms to allied forces and allowed them to pay later.
o it allowed the us to sell arms to belligerent nations.
o it put us bases on german territory.
o it put us bases on british territory.

Explanation:

The Lend - Lease Act was a significant policy during World War II. Isolationism meant the US wanted to stay out of foreign conflicts. By lending arms to Allied forces (with the option for later payment), the US was actively supporting one side (the Allies) in the war, which was a departure from the neutral and non - involved stance of isolationism.
Selling arms to belligerent nations (a more general statement) doesn't specifically highlight the shift in the same way as the lending (with deferred payment) aspect which was a more active form of support. Putting US bases on German territory was not part of the Lend - Lease Act (and Germany was an Axis power). Putting US bases on British territory was part of a separate agreement (the Destroyers for Bases Deal) and not the main aspect of the Lend - Lease Act's shift from isolationism.

Answer:

It lent arms to Allied forces and allowed them to pay later.