Answer: A) When it is finally ours, this freedom, this liberty, this beautiful and terrible thing, needful to man as air, usable as earth; when it belongs at last to all, when it is truly instinct, brain matter, diastole, systole
Explanation: parallelism is a literary device that consists in the repetition of the grammatical structure of different words or phrases in a sentence or paragraph, in order to emphasize an idea or to create an impact in the audience. From the given options, the segment from "Frederick Douglass" that demonstrates parallelism, is the corresponding to option A, because of the phrases "this freedom, this liberty, this beautiful and terrible thing," "needful to man as air, usable as earth," and "when it belongs at last to all, when it is truly instinct" that use repeated structures.
