The correct options are
B Stalin wanted to be in peaceful terms with Germany, and buy time to build the Soviet military.
C Adolf Hitler used the pact to make sure Germany was able to invade Poland unopposed.
D The parties discreetly agreed how they would later divide up Eastern Europe.
In the Non-aggression Pact, the parties agreed to take no military action against each other for the next ten years. As Europe was on the brink of another major war, Soviet leader Joseph Stalin wanted to be on peaceful terms with Germany, while giving him time to build up the Soviet military. Adolf Hitler used the pact to make sure Germany was able to invade Poland unopposed. It also contained a secret agreement, in which the Soviets and Germans agreed how they would later divide up Eastern Europe.