一道语法题(关于parallel的不唯一性）备忘

I opened this thread again to clear my doubt.

Why the subject here is "a group" instead of "tropical birds" for verb "includes".

As I know below are correct..
Each one of the cars is red in color ...
Each one of the cars that are red in color ...

The usage of that or which refers to immediate before noun, and the verb following it should agree with that noun..

So this answer should have "include" and not "includes".
Please kindly clarify.

A South American bird that forages for winged termites and other small insects while swinging upside down form the foliage of tall trees, the graveteiro belongs to the ovenbird family, a group of New World tropical birds that includes more than 230 species and that are represented in virtually every kind of habitat.

Seeing the second clause explaining graveteiro :
graveteiro belongs to the ovenbird family, a group (of New World tropical birds) that (includes more than 230 species) and that (are represented in virtually every kind of habitat).

So two things are being told about this group: species included and kind of habitat, and so they should be in parallel, this parallelism can be in either of two ways: One subordinate clause introduced by that and the two conjugated with an and or parallel that clauses. The option contains each of these varities, and in my opinion, both could be correct depending on the parallelism exhibited in word choice.

Now option A and D tries two parallel that clauses, BCE uses and to show the parallelism under one that clause.

Now all things being equal, the pronoun which is not necessary so kill option D and E as long as we can find some answer in ABC:


A. graveteiro belongs to the ovenbird family, a group (of New World tropical birds) that includes more than 230 species and that are

So the includes and are are not consistent, if this that is referring to group both should be singular, even if to birds(which is nonsensical in given contet as birds can not posses species, group can),

B. graveteiro belongs to the ovenbird family, a group (of New World tropical birds) that includes more than 230 species and is


Fine as long as both are singular.

C. graveteiro belongs to the ovenbird family, a group (of New World tropical birds) that include more than 230 species and is
Not ok.