<p>December 2013 71E, number 65.</p>
<p>So, Parmesan has proposed a way to save the quarter-sized butterflies and THAT DOING SO, main biodiversity.</p>
<p>A. NO CHANGE
B. by which so doing,
C. in which doing so,
D. in so doing,</p>
<p>The answer is D, but I don't know why it's D. D sounds weird.</p>
<p>It’s the least wordy of all. This is a horrible question btw</p>
<p>It should say “maintain biodiversity”. And thanks! It was a really arbitrary question.</p>
<p>More of a familiarity-with-phrases question than anything else, I guess. You have to read A, B, and C and realize that none of them sound right; “that,” “by which,” and “in which” don’t make sense here.</p>
<p>That is - wow, that’s odd. I would have assumed that the answer would be “in doing so.”
@bodangles has the right idea: it’s just a poorly worded question.</p>