<p>Can someone explain question 18 in the writing section of this year's practice PSAT (the one that you get when you sign up for the PSAT)?</p>
<p>According to no lesser of an authority than Parkman, the most momentous event in the history of colonial North America was the expulsion of the French.</p>
<p>(A) lesser of an authority than
(B) lesser an authority such as
(C) less an authority as
(D) less of an authority than was
(E) less an authority than</p>
<p>Collegeboard's explanation doesn't make any sense to me.</p>