chetan2u
Hi Mike,
Just saw your explanation for Choice A.
Quote:
the prompt is somewhat unclear in meaning, and “does the same thing to them” is a very colloquial construction that would not be considered acceptable on the GMAT.
My first take on it was
1) PRONOUN error.. THEM in end of the sentence can refer to acids or metals... There have been one odd instances where 'them' being 'object' should refer to the 'object' if both object and subject have been given.
2) Also 'the same thing' refers to some NOUN, but there is none in the initial clause, same thing' cannot refer to VERB corrode
My Q- Would your Explanation, if further broken down, would mean any of these things.
Did you write the Q keeping the above errors in your mind? Dear
chetan2u,
Again, my friend, writing your entire respond in bold is something likely to be misinterpreted as incourteous.
To be honest, the way I write a question is to write the OA first, the sentence that sounds good to me, and from this, I change it in various ways, making various kinds of mistakes, and one of those mistake versions becomes the prompt.
As for this mistake in (A), I don't agree that there's necessarily a pronoun error, only because parallelism is always an important clue in establishing the antecedent of a pronoun. For example, in this very un-GMAT-like sentence, there's no pronoun ambiguity.
Dogs chase seagulls and little children chase them too.
Obviously, the subject matter is too folksy to appear on the GMAT, but the antecedent of "them" is guaranteed by the parallelism: both "seagulls" and "them" are objects in parallel with each other, so that is enough to establish their identity. Something similar is happening with the "them" in option (A).
I would say the BIG problem with (A) is your #2---the construction '
the same thing" is a sloppy way to refer to a previous action. This is common in American colloquial speech, but it would be unacceptable on the GMAT.
Does all this make sense?
Mike