Answer:
a. fundamental injustice and inhumanity of slavery
Step-by-step explanation:
The answer is --
a. fundamental injustice and inhumanity of slavery
John Conyers was a African-American politician of the Democratic Party, who served as the longest serving congressmen.
As a congressman, he authored several bills in the Congress which includes the Alcohol Warning Label Act, the Hate Crime Statistics Act, etc. He also fought against the injustice shown based on racial discrimination to the African American people in the United States.
Since 1989, John Conyers who is a lawyer and a ranking member of House Judiciary Committee has annually introduced the "HR. 40" bill. According to this bill a commission would be establish to inspect the institution of slavery in United States and would recommend appropriate measures.
Thus the answer is ---
a. fundamental injustice and inhumanity of slavery