<p>what did u guys put for the question that was like:</p>
<p>"gardners would use fertilizers more (if they can be shown to increase crop production)"</p>
<p>() = underlined</p>
<p>I said A (as it is) because all the answers seemed wrong because they were awkwardly constructed...</p>
<p>also, all of the choices had "them" or "they" (which is not a clear reference because it could refer to gardners or fertilizers), so i chose the one that was least awkward... choice A. </p>
<p>Is anyone a writing expert who is sure of the answer...I'm sure many would like to know...</p>
<p>Are you sure that's the exact sentence? Also, without seeing the other choices, it's almost impossible to answer. A lot of the problems with the multiple choice aren't necessarily grammatically wrong, but that they are awkward and wordy. It's quite possible that one of the answers that sounded wrong to you was correct.</p>
<p>I also don't think think that parallel structure applies here or that "could" is supposed to parallel "would." The condition is whether or not gardeners would use fertilizer, not whether one could show fertilizer to increase crop production.</p>
<p>If I were correcting that sentence, I'd rewrite it like this:</p>
<p>Gardners would use fertilizer more if they were shown to increase crop production.</p>
<p>or even:</p>
<p>Gardners would use fertilizer more, were they shown to increase crop production.</p>
<p>Then again.. I could be talking out of my ass :) Writing is very finicky, so it can be hard to know all the rules, and all the exceptions.</p>