Final answer:
The 13th Amendment abolished slavery in the United States, except as a punishment for crime. It did not specify political rights for African-Americans.
Step-by-step explanation:
The 13th Amendment to the United States Constitution abolished slavery and involuntary servitude except as a punishment for crime. This means that slavery was completely outlawed in the United States and any place subject to their jurisdiction, except for when it was used as a punishment for convicted criminals.
The correct statement that best summarizes the 13th Amendment is c. The amendment outlawed slavery but did not specify an African-American's political rights. While the 13th Amendment freed slaves, it didn't guarantee equal rights, citizenship, or political participation for African-Americans.