The Soviet Union was implored to join the Allies because Hitler had broken a pact and attacked.
Why did the Soviet Union join the allies?
The Soviets and Hitler had signed a treaty that meant that both nations would not attack each other and would jointly occupy Poland.
Hitler broke this treaty and attacked the Soviets in 1941. With the Soviets facing defeat, they joined the Allies and received the support needed to win.
In conclusion, option B is correct.
Find out more on the treaty the Soviets signed at https://brainly.com/question/4890799.
