In some species of Cricket, the number of chirps per minute

[RonPurewal]

these things are discussed in the thread. please read the entire thread.
thank you.

[FeliciaL897]

Sorry to open this thread again.

I have already understood why E is wrong, but I still have questions about E.
Somebody told me that 'serving as ...' here can be an attribute to modify 'temperature' and can also be an adverbial to modify the preceding sentence, so the usage of ‘serving as...’ is not proper because of various meaings.
Is this view true？Can 'serving as...' here be an attribute?

Thanks.

[RonPurewal]

sorry, but i don't know the terminology that you are using ("attribute"). in any case, whatever that might mean, it's certainly not anything you'll need to know for GMAT SC.

[ChenyuW823]

Hi instructors,
at
I am confused of the "it" in the OA D
According to the OA, "it" refers back to the "number of...." isn't "it" redundant here? should't the correct answer be:
to attract females rises and falls in accordance with the surrounding temperature and can in fact serve


I've read through the posts above and noticed that some others also mention the usage of "and" to connect two independent clause. Most of the cases, in additions to the examples provided in the above posts, the two independent clauses have two different subjects. If the subject of the clauses is the same, in my view, there is no need to repeat of use pronoun.

[Sage Pearce-Higgins]

Good question - this is a tricky one! I'd say that your variant is okay: as you explain, if the subject is the same then there's no need to repeat it. However, if the sentence is very long, then repeating the subject can make things clearer. Also, perhaps "it" is referring to the male and not to the number (i.e. a different subject). Finally, there's no alternative option among the answer choices. Remember that your job is to find the best answer, not a perfect one!