The answer to the question above would be that the sentence that illustrates the proper use of parallel structure is the following one: She pulled back her fist, hit him in the face, and took his wallet and keys. That is, the correct option would be 3.
Parallel structure, also known as parallelism, is the repetition of a chosen grammatical form within a sentence. In this case, the repetition involves the repetition of the verb phrase (4 transitive verbs with their arguments). The comma separates each of the actions performed (pulled back, hit) and the last one (took) in the list is preceded by the conjunction and.
