I had a very difficult time figuring out how to best approach this problem. Normally, I am initially able to read the sentence and flag/classify the grammar error. With this question, however, I had a very difficult time eliminating incorrect answer choices because I felt that "Unlike" phrase was the correct way to begin the sentence. I would appreciate the forums incite into how they best eliminated incorrect answer choices to arrive at the best choice. Thanks!
Unlike most warbler species, the male and female blue-winged warbler are very difficult to tell apart.
a. Unlike most warbler species, the male and female blue-winged warbler are very difficult to tell apart.
b. Unlike most warbler species, the gender of the blue-winged warbler is very difficult to distinguish
c. Unlike those in most warbler species, the male and female blue-winged warblers are very difficult to distinguish
d. It is very difficult, unlike in most warbler species, to tell the male and female blue-winged warbler apart.
e. Blue-winged warblers are unlike most species of warbler in that it is very difficult to tell the male and female apart.