D. parallel structure just means that all of your verbs in the comma series line up in regards to tenses, here. in choice D, it's "BE friendly," "INTRODUCE yourself," and "SMILE." these are all present tense verbs.
the rest of the choices don't match--"exercise" and "stretching" are two different verb forms in choice A, "to go to the library" is the odd one out in choice B, ane "to build" doesn't match with the "-ing" verbs in choice C.
<em>What is the effect of using the first person in "A Modest Proposal" by Jonathan Swift?</em>
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<u><em>C.</em></u>
<u><em>Readers are able to identify with the narrator's agenda.</em></u>
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<em>~Hope this answers your question!~</em>
B! The answer needs to be clear and straight forward
That event was historically correct.
<span>The self-expression and logic in pose letters is also evident in his literature.</span>
