The correct answer is D. The Scarlet Letter is an important American novel, and it was written by Nathaniel Hawthorne.
Explanation:
In grammar, faulty coordination is a type of mistake in the construction of a sentence that occurs when two ideas or clauses that do not have the same importance or focus are connected in one sentence, which results in an illogical sentence or construction. This is the case of the sentence "The Scarlet Letter is an important American novel, and it was written by Nathaniel Hawthorne" because in this sentence the first clause or section of the sentence deals with the importance of the novel The Scarlett Letter and this importance is not connected to the fact it was written by Nathaniel Hawthorne, which creates an illogical or faulty coordination, that requires changing the ideas or adding a transition between both ideas.
