How did the soviet union act during the darkest hour

This month marks 75 years since the United States launched its Lend-Lease program to supply the Allies with much-needed war materiel for the fight against Hitler. Downplayed by the Soviet Union, the program was of vital importance to the USSR’s war effort, as even Marshal Zhukov later admitted.

On March 11, 1941 American President Franklin D. Roosevelt signed the Lend-Lease bill, which permitted the U.S. to supply its anti-Hitler coalition allies with materiel.

please mark me has a brainist

the answer is b, encourage free trade