Answer:
c. Suppliers discriminated against Jewish suppliers due to anti-Semitic beliefs.
Step-by-step explanation:
During the Holocaust and the period leading up to it in Nazi Germany, many Jewish individuals and businesses faced discrimination and persecution due to the anti-Semitic beliefs of the Nazi regime. This included suppliers refusing to provide parts or do business with Jewish suppliers, which was part of the broader systemic discrimination and marginalization of Jewish people during that time.