Which of the following sentences contains parallel structure? a. it is for us the living, rather, to be dedicated here to the unfinished work which they who fought here have thus far so nobly advanced. it is rather for us to be here dedicated to the great task remaining before us. b. four score and seven years ago our fathers brought forth on this continent, a new nation, conceived in liberty, and dedicated to the proposition that all men are created equal. c. the brave men, living and dead, who struggled here, have consecrated it, far above our poor power to add or detract. d. now we are engaged in a great civil war, testing whether that nation, or any nation so conceived and so dedicated, can long endure.

.The only sentence that contains a parallel structure is option B.  Four score and seven years ago our fathers brought forth on this continent, a new nation, conceived in Liberty, and dedicated to the proposition that all men are created equal

Options A,C and D are not ´parallel structures because they do not carry the same tense

Parallel structure means that the items included in a list must be in the same form, in this case all main verbs are in the past simple

today we'd use social media to quickly spread a controversial idea, but in the eighteenth century, the printed pamphlet was highly effective. and thomas paine took full advantage of it. on january 9, 1776, when paine published his pamphlet, "common sense," he wanted to push the american people toward independence from britain. it ultimately ignite the american revolution. thomas paine argued that the monarchy was evil and should be rejected as a form of government. to underscore his point, he cited the bible to argue his case -- in judges 8: 22-23: "the israelites said to gideon, 'rule over us, you and your son and your ' gideon told them, 'i will not rule over you. the lord will rule over you'" (nrsv).