Which group of words would make a better revision of this sentence?
Personal accounts of Amelia Earhart suggest that she was a woman of courage, integrity, and she was intelligent.

Parallel structure is a grammatical device that uses the same grammatical form for two or more clauses or phrases. This makes the writing more balanced and easier to read. In the original sentence, the first two clauses are parallel: "courage, integrity, and". However, the third clause is not parallel because it begins with the word "she" and then uses the verb "was". To make the sentence parallel, the third clause should also begin with a noun: "courage, integrity, and intelligence".