Answer:
c. ratification of the Fourteenth Amendment (1868)
Step-by-step explanation:
African Americans got citizenship rights in the United States through the ratification of the Fourteenth Amendment (1868). The amendment was ratified during the period of Reconstruction and it also specified that the equal protection of the laws shall not be denied to any citizen based on race or different state's jurisdiction. This was a reminder of Garrison 's position a decade ago. "Garrisonians" may have supported changes in the other three options, but those options did not expressly grant African Americans citizenship.