I say it is enterprising.
In the poem The Raven, the speaker seems paranoid and desperate. he claims to be hearing strange noises from outside his room as well as claiming that the spirit of his loved one, Eleanor, has come back to him.
.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
