I believe that you are correct that D is the right answer.
Answer:
Understanding a time period is very important. If a reader is reading a text which speaks openly about slavery and uses derogatory names, one should understand that during the period which the text was written deemed it "okay." I always have to remind my students that a text comes from...
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B. using few words. </span>
A. Thesaurus, that's what people typically use on tests, essays, etc.