Final answer:
The 13th Amendment to the United States Constitution banned slavery.
Step-by-step explanation:
The correct answer is option c. 13th Amendment.
The 13th Amendment to the United States Constitution, ratified in 1865, abolished slavery and involuntary servitude, except as punishment for a crime.
This amendment was a significant milestone in American history as it brought an end to the institution of slavery, which had been a deeply entrenched practice for centuries.
Learn more about Slavery and the 13th Amendment