Which statement best describes the role of scientific racism in Nazi persecution?

Scientific racism proposed that the Aryans were an inferior race and the only way for Germans to advance was to destroy them.

Scientific racism was used to construct a theoretically superior Aryan race and to justify racism against other supposedly inferior races.

Scientific racism was common at the time but was not a factor in Nazi persecution or their policies.

Scientific racism combined Social Darwinism and eugenics to exclusively attack Jewish peoples.

The statement that best describes the role of scientific racism in Nazi persecution is: "Scientific racism was used to construct a theoretically superior Aryan race and to justify racism against other supposedly inferior races." This statement captures the idea that scientific racism was employed by the Nazis to establish a racial hierarchy, with Aryans deemed superior and other races considered inferior, which ultimately led to the persecution of those deemed inferior.