The sentence that correctly uses parallel verb phrases is B. The dust was swept up by the electronic vacuum, and the floors were cleaned by an automated mop.
A parallel verb phrase is a type of phrase where the verbs in a sentence must maintain uniformity by being parallel.
Therefore, if more than one verb are in a sentence, then their tenses must be the same, and their progression
Therefore, the correct answer is option B because the sentence is uniform in tense and gives a clear meaning.
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