"hitler’s actions as expressed by this cartoon led stalin to
(1)adopt a policy of appeasement
(2)take over germany’s industry
(3)join the allies in the fight against germany
(4)reduce the size of the soviet army"

The correct answer is number 3)  join the Allies in the fight against Germany.

Hitler’s actions as expressed by this cartoon led Stalin to join the Allies in the fight against Germany.

Adolph Hitler's Germany represented a real threat to Europe and Russia at the end of the 1930s. That is why, after the invasión of Poland in 1939 by the German troops and seizing the risk it represented for the USSR, Joseph Stalin, the leader of the Soviet Union, opted to join forces with the allies to fight Hitler in World War II. In the meantime, United States President Woodrow Wilson decided to maintain the foreign policy of neutrality as long as he could, but after the attack of Pearl Harbor, Wilson has to ask Congress for a declaration of war.

a is correct

hope this let me know if it is right