Hi willigetmylifeback,
You have once again made me question my logic with an interesting reply. :)
Ok, lets take it one by one.
willigetmylifeback Wrote: Its can't refer back to the Object of the Preposition
Are you saying that since this is a possessive pronoun, it cannot refer to an object of preposition? I don't know about this rule. Have you read it somewhere? Please let me know the source or send me a link. Thanks
willigetmylifeback Wrote:Also, it's the Sting that is rarely fatal. And I think we can write the following sentence as
who are particularly vulnerable to the its (Sting's) venom.
So I don't think we need to add gnat's (as above said by you) to correct the sentence.
You are right when you say that the sting is rarely fatal. However, I am not sure if we can call it "sting's venom". I am not saying that its wrong, perhaps its acceptable but I have always heard "snake's venom" on TV, not "bite's venom".
Once again, let me clarify my post to Abhinav. I was merely stating the best possible sentence in my opinion. Remember that on GMAT, we have to pick the best answer choice and that may not be the best sentence in terms of written english.
I say this specifically in reference to pronoun ambiguity. This issue is taken very mechanically by a lot of us. Ron, in one of his videos has explained very well that pronoun ambiguity is only important on the GMAT when one of the five answer choices eliminates that error. There are examples in the OG where there is a possible pronoun ambiguity but all the five answer choices had it. The sentence was actually testing something else entirely.
Ron also used a good example. Supposing we hear this sentence and it is not a full sentence because we did not hear it fully:
Take the pizza out of the box and put it.....
We don't know what follows after it. It could be a nice long clause or a short and sweet one. But if we had to choose what "it" stands for, we know from the context of the sentence that "it" here definitely stands for pizza, not the box.
So remember that pronoun ambiguity is only relevant if one or more answer choice either replaces that pronoun with a noun or of it changes the position of the pronoun in such a way that it is no longer ambiguous. If all the answer choices have that "acceptable" pronoun ambiguity, then we should not sit there and scratch our heads.
Coming back to the issue, if "its" cannot refer back to the object of preposition then willigetlifeback is right and there is no ambiguity. However, I still prefer gnat's venom to sting's venom and because of that, I will not use "its" here. I would prefer to use gnat's venom
Hope this helps
Regards
Sunil