The answer to this question is the letter "C" which is "Clergy". The definition of the clergy is the group of people who are selected and devoted to doing religious activity and duties. This is what Martin Luther been doing and that is why the peasant saw him as a champion of the clergy.
Answer:
Providing supplies to American and Allied troops fighting the war in Europe, Africa, and the Pacific required the efforts of all Americans. At home, citizens contributed to the war effort by rationing consumer goods, recycling materials, purchasing war bonds, and working in war industries. At home, buying war bonds or savings stamps was probably the most common way to support the war. When people bought a bond or a savings stamp, they were lending money to the government. Their money would be paid back with interest after the war
Due to the deaths of most of the population, "ordinary farm workers, who had been forced into serfdom previously, shot up by 50%. More bullion among a smaller population meant more wealth across all classes and because the same land was in use and it was now plentiful, it resulted in technological advances as well." - Hank Campbell (found at Science20.com)
About a third of the clergy fell to the Black Death, making answer a. unlikely.
I never found any information stating Peasants migrated into cities for medical care, making answer b. unlikely.
Lower classes benefited from the Black Death economically, therefore c. is my final answer.
Doctors at this time knew nothing about how to cure disease, they also made little to none advancements. Answer d. is very wrong.
He stood for freedoms and civic duties of the african american. His support for communism as emanating from the lack of segregation he witnessed in the country. He revoked the fifth ammendment to clarify his support for communism.