<p>1)* Unlike sight, hearing is * enhanced underwater because water transmits the pressure waves of sound much more rapidly and effectively than does air.</p>
<p>(A) Unlike sight, hearing is
(D) Hearing, unlike sight, is</p>
<p>The correct answer is A, but I don't understand why D is incorrect. Could someone help me? THANK YOU.</p>
<p>It’s more efficient. D is not grammatically incorrect, though. A is just the better choice.</p>
<p>This doesn’t seem like a college board question. Really a garbage question if you ask me.</p>
<p>Im guessing its A because the subject is HEARING and its closest to “enhanced … air” unlike D where it goes “Hearing, WORDY, BREAKING UP INTO PIECES, etc”</p>
<p>“Hearing” is the subject of the clause “hearing is enhanced underwater…etc”. So it is better to use “hearing” with the rest of the phrase “hearing is enhanced”. It usually is a dangling/mis-placed modifier error if you do not state what the clause is referring to RIGHT AFTER what is initially being talked about (hearing). “Unlike”, “not only”, “but”, “however”, or anything of that sort when in a clause usually comes first rather then second in position. In this case, D uses “Unlike” second. It is much clearer and precise to use Unlike first. </p>
<p>When it comes down to two correct sentences grammatically, clarity comes into play. In improving sentence questions, it is the most clear and simple sentence that is often the right answer (according to McGrawHill) since it avoids un-necessary wording that is not needed.</p>
<p>Ofcourse, anyone, correct me if I am wrong.</p>
<p>Edit: Seems like I was too late 
I thought I was going to be the first one to post in this thread. But, yes, what the above posters are referring to is correct.</p>