The three ideas are connected to the Nazi-Germany and Adolf Hitler, the author of Mein Kampf. The party in power was the Nacional Social Democratic Worker's Party - so we reject option d).
the Nuremberg Trials were trails of the Nazis, but not by the Nazis, so we can also reject this option.
the other two options are similar and related, but the invasion of Poland was not connected to anti-semitism, so so the correct answer is B.
