<p>Since the explanations offered are ------- to the exposition, it would be unfair to treat them as ------- parts of the studies under consideration.</p>
<p>i chose B because if something is irrelevant then having an over amount of something contradicts it. The answer is D, i also understand why D is right, but at the same time i feal B is correct. A little help.</p>
<p>The direction of the sentence reverses, meaning that the answer choices will be opposite in meaning.</p>
<p>If the explanations offered are irrelevant to the exposition, then it would be perfectly FAIR to treat them as superfluous, or unnecessary because they are not pertinent.</p>
<p>D is correct because incidental and essential are basically opposite in meaning. Because the explanations are incidental, it’s not fair to consider them essential.</p>