<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>