Whenever we see "unlike" we're being testing on a comparison. We need to make sure that the things that we're comparing are both structurally and logically similar.

The problem with (a) is that the comparison isn't logically similar; on the one hand, we have "most warbler species" and on the other we have "the male and female blue winged warbler".

We can't compare species to warblers - we can only compare species to species or specific birds to specific birds.

To be honest, I'm also not thrilled with (e). On the GMAT (and in proper english usage everywhere), when we compare one member of a group to the rest of the group we need to use "other" as part of the comparison. So, when we compare Blue Winged Warblers to other species of warbler, we really need to say "are unlike most OTHER warbler species".

Just curious, where is this question from?

Thanks very much.

That makes sense.

I think it was a Kaplan or one of the old SC questions.

Khurram

Thanks very much.

That makes sense.

I think it was a Kaplan or one of the old SC questions.

Khurram

Great question:

1) Thanks Stuart for an excellent explanation
2) OA is not always the prettiest choice!