Answer:
Among the options given on the question the correct answer is option C.
African Americans were performing the same duties as others without the same rights
Explanation: The excerpt given on the question is the part of speech of Frederick Douglass who was known for as one of the leading figures of the Antislavery movement in 1800s. He escaped from slavery and later freed himself from slavery. After being the freed man he devoted himself in anti slavery movement and soon became well known to all for his activities in Rochester, New York where he settled himself.
In 1852, he was invited by the citizens of the town to give speech on 4th July celebration. He accepted it and gave the speech which became later famous.
However the excerpt described in the question indicates the true of his time, that African Americans were performing the same duties as others without the same rights. Because he mentioned about the activities and the contribution of the African Americans in the nation during that time. They were working in the military, they were doing business, they were working in factories, hospitals. They had family,they also confess and worship of Christian God.
But still they were deprived of their right as a citizen like others. The line," we are called upon to prove that we are men" describes the disappointment being discriminated on the basis of race even after performing the same duty as other citizens.