The answer is c
your welcome :)
Prevalent means widespread, dominant
Flu is prevalent in the wintertime as many people catch it.
I believe that its D, because this is talking about the effects of the nation...
(but idk I'm just a middle school pleb)
The author clearly states how violent Hitler was and how bad of a person he was in the following section from paragraph 1: "Before and during World War II, he promoted racist ideas and ordered the murder of millions of ethnic minorities, especially Jews. He rose to power during a time of crisis in Germany, and his cruel, violent legacy is often seen as a warning to the rest of the world of what can happen when someone is too obsessed with national pride and racial superiority.