The correct answer is <span>A. At age 22, Benjamin Franklin began publishing The Pennsylvania Gazette and writing most of the articles for it.
When it comes to parallelism within sentences, it refers to the fact that the same form of words is used throughout. As you can see in sentence A, the same form of words publishing and writing is used - both of them are gerunds. The other sentences do not show parallelism.
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An allusion -- the writer is making a reference to another work or incident
The answer is D. digestive, circulatory, endocrine, and nervous
