Quick grammar question

Test Preparation SAT Preparation
1

<p>Just how critical an improved balance of trade is to a healthy economy has never been more clearer than it is now. No error
</p>

<p>The answer is "D: more clearer," because it's redundant to use an "-er" word and "more."
My question is, would the phrase be changed to "more clear," "clearer," or "more clearly"?</p>

<p>Scroll down to question #18. Collegeboard says "more clearly" but I disagree. :( Doesn't "more clearly" sound so strange?</p>

<p><a href="https://satonlinecourse.collegeboard.org/SR/viewExplanation.do?assessmentLocator=A9103204-0A42-F83B-00AE-506E9A27D4BE-1::AS&section=A92704EE-0A42-F83B-9BE4-B7C602DC0B01-1::S&fromPage=book-owners%5B/url%5D"&gt;https://satonlinecourse.collegeboard.org/SR/viewExplanation.do?assessmentLocator=A9103204-0A42-F83B-00AE-506E9A27D4BE-1::AS&section=A92704EE-0A42-F83B-9BE4-B7C602DC0B01-1::S&fromPage=book-owners&lt;/a&gt;&lt;/p>

2

<p>Clearer.</p>

<p>Link doesn’t work for me, for lack of subscription. More clearly is plainly just as wrong as more clearer.</p>

3

<p>Ooh okay thanks! :)</p>

4

<p>

</p>

<p>…but for a different reason. </p>

<p>More clearly is wrong because this particular sentence calls for an adjective, clearer, and not an adverb, clearly, to modify the noun clause just how critical…economy. </p>

<p>On the other hand, more clearer is wrong because you create the comparative degree of an adjective by adding the suffix -er, or sometimes by using the adverb *more<a href=“e.g.,%20you%20say%20%5BI%5Dmore%20difficult%5B/I%5D,%20as%20opposed%20to%20%5BI%5Ddifficulter%5B/I%5D”>/I</a>, but not both.</p>