I believe it is the installment plan. :)
Seems like a great question please notify me when the answer comes in
Go here it has all your answers https://quizlet.com/76254856/us-history-ii-chapter-26-flash-cards/
I'll first explain what the non-aggression pact was. It was an agreement that the Soviet Union and Germany would take no military action against each other. To answer your question it is B. The pact was to make sure he could safely attack Poland.