I believe the answer for this one is that the Nazis blamed the Jews for social, political, economic conditions in Germany. The Germans would soon take it to the extreme, and "punish" them by committing one of the worst crimes possible, genocide, because of the Anti-Semistic views.
The answer is definitely A.
Chlorine and Mustard gas are types of poison gas, sometimes used during chemical warfare. For example Germany introduced their usage against the Allies during WW1.
<span>Primary sources are first-hand accounts of a topic while secondary sources are any account of something that is not a primary source. Published research, newspaper articles, and other media are typical secondary sources. Secondary sources can, however, cite both primary sources and secondary sources.
</span><span> Hope this helps :) :)</span>
