Answer:
C
Explanation:
After the war ended, Germany was blamed, despite the fact that it was Austro-Hungary that started the War. The treaty prevented the German government from having an airforce or navy, and severely limited the German Army. Because of this humiliation, this would be used as a pretext for Adolf Hitler.
You could write about volunteering for example
I believe it would be D. Not 100% on it but i am fairly certain.