The correct answer is C) 6 million.
<em>Approximately, 6 million Jews were killed during the Holocaust.</em>
The Holocaust was the persecution and murder of 6 million Jews by the Nazi Party. Since 1933, when the Nazi became the party on power, they believed in race supremacy and wanted to create a supreme race in Germany, getting rid of Jewish people. Nazis believed that Germans were "pure race" and Jewish were inferior people. So yes, approximately, six million Jews were killed during the Holocaust.
I'm sure the answer is there are no public documents. because if there was no public documents how would we be able to research and learn about it.