Final answer:
The Nazis killed the Slavs based on their racial policies that viewed Slavs as inferior and as political obstacles to the Nazi goals of Aryan racial purity and territorial expansion. The Slavs' supposed associations with communism and Jewish Bolshevism justified their persecution in the Nazi narrative.
Step-by-step explanation:
The reason why Nazis killed the Slavs during World War II is rooted in Nazi ideology and race theory. The answer to the student's question primarily lies in Nazi racism and their view of Slavs as subhuman or of impure blood, similar to their view of Jews and other groups they considered undesirable. This belief system considered Slavs to be an obstacle to the expansion of a 'pure' Aryan race and Nazi geopolitical ambitions in Eastern Europe. Therefore, options A and D are more factually accurate, while options B, C, and E reflect misunderstandings or misrepresentations of historical facts.
Germans, under Nazi rule, targeted the Slavs based on their racial policies, which stemmed from a distorted interpretation of social Darwinism and eugenics. This led to the belief that the Aryan race was superior to others and that the Slavs, by virtue of being Eastern Europeans, were inferior and suited for enslavement or extermination. The Slavs were also seen as political obstacles to Nazi goals, as they occupied territories that the Nazis wanted for their concept of 'Lebensraum' (living space) and were often associated with the Soviets, whom the Nazis were at war with.
The Nazis also categorized the Slavs under their broad anti-Semitic and anti-Bolshevik propaganda, often depicting them as communist sympathizers or under the influence of Jewish Bolshevism. This fed into the narrative that justified their mistreatment and genocide as part of the broader Nazi strategy of racial purification and territorial expansion.