Read the sentence. walt whitman was an american poet, journalist, and he also wrote essays. which revision most effectively corrects the faulty parallelism in the sentence?

If we consider that Parallelism is the use of components in a sentence that are  grammatically the same ( or similar in their construction), we can correct the given sentence as it follows:

Walt Whitman was an American poet and journalist ( being POET and JOURNALIST two professions and two nouns. He also wrote essays ( as WRITE is a verb, and it doesn't have the same grammatical structure as  POET and JOURNALIST)

he supported the seperation of church and state. he also promoted religious tolerance.