(A) He was a former slave who argued for slavery.
(B) ** He was a former slave who was highly intelligent and was a talented speaker.
(C) He fought in many Civil War battles.
(D) He became Vice President.
EXPLANATIONS BELOW
Concept note-1: -He rose to fame with the 1845 publication of his first book The Narrative of the Life of Frederick Douglass, An American Slave, Written By Himself. He fought throughout most of his career for the abolition of slavery and worked with notable abolitionists like William Lloyd Garrison and Gerrit Smith.
Concept note-2: -He embraced the women’s rights movement, helped people on the Underground Railroad, and supported anti-slavery political parties. Once an ally of William Lloyd Garrison and his followers, Douglass started to work more closely with Gerrit Smith and John Brown.
Concept note-3: -In doing so, Douglass went on to become a great writer, orator, publisher, civil rights leader and government official. Douglass authored three autobiographies, with his first and best-known, Narrative of the Life of Frederick Douglass, an American Slave, published in 1845.
Concept note-4: -Douglass was an abolitionist, civil rights activist, feminist and advocate of social justice. He travelled to Britain in 1845 for 19 months, lecturing against slavery in the United States.