Final answer:
The Naval Expansion Act was part of FDR's efforts to enhance US defenses and provide support to allies during WWII, but the exact amount authorized by the Act is not specified in the provided information.
Step-by-step explanation:
The Naval Expansion Act was a significant legislation that authorized a substantial increase in the size of the US Navy. The exact funding provided by the Act isn't stated in the snippets provided, and therefore, I cannot give a definitive answer to the multiple-choice question posed. However, the historical context indicates that large sums were allocated for military expansion as the US ramped up its preparedness ahead of its involvement in World War II.
This preparation included the Lend-Lease Act, which allowed the US to supply militarily aid to allies, and the exchange of old destroyers for rights to naval bases, both of which exemplified President Roosevelt's initiatives to strengthen the US military presence without direct involvement in the war at first.