SAT Grammar Help

<p>Hello all!
I have on question that I am very frustrated with because I can usually can get perfect, but this one has me stumped.</p>

<p>Along the curve of islands known as the Florida Keys lies a reef of living coral, the only one
A B C
of a kind in the continental United States. No error.
D E</p>

<p>Should the sentence read "the only one of its kind?"
Thanks!</p>

<p>yes it should be: the only one of its kind in the US.</p>

<p>“the only one of a kind” doesn’t make sense in the sentence. This is an idiom: something is one of its kind. </p>

<ul>
<li>“One of a kind” is used only before a noun.</li>
</ul>

<p>Eg. One of a kind experience. One of a kind macaroni.</p>

<p>But when you want to say the same thing in this format, (Noun) is (one of a kind), you need to replace “one of a kind” with “one of its kind”.</p>