It is A. I googled all of them and A is the only one that didn't have stories written about it.
Answer:
The black codes were created by people to take away black people's rights, even though the 14th amendment said that all citizens have equal rights. Racist Americans still tried to force these black codes on African Americans, which is why it violated that amendment.
Hey there!
The progressive reformers during this time in the United States were most concerned with corruption in both big business and federal and state government.
Hope this helps!
Credit to @HistoryGuy