(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.
Solution:
Parallelism
In A and B, “warbler species” is incorrectly compared to “the male and female…” (A) and “the gender” (B). A species can only be compared to another species. Hence, A and B are incorrect.
In C, “…those in.., the male and female…” is not parallel. The way “those in” is used in the first part of the sentence, similarly in the second part too, “in this” or “in that” species must be used to make it correct.
In D, “unlike in most warbler species” incorrectly modifies “difficult”.
In E, “in that” limits the meaning of the foregoing words to “most species of warbler”. "it is very difficult to ..." explains precisely in what way the blue-winged warblers are "unlike most other species of warbler".
Sentence Correction - 1000 Questions with Solution:
