RonPurewal Wrote:you probably picked answer choice (a), but i'll give a brief treatment of all of them, just to be sure.
(a)
you cannot write "proof of ... fields ... posing". this kind of construction is just wrong.
sorry.
this is going to annoy a lot of people, because this sort of construction is bread and butter in spoken language,
BUT:
if the focus of the construction is the ACTION, then you must use the POSSESSIVE form for the noun/pronoun preceding the "-ing" participle. since that's fatally awkward to say in words, i'll provide an example:
everyone laughed at me accidentally walking into the girls' bathroom --> WRONG. sorry. this sentence would actually mean that everyone laughed at me as they were walking into the girls' bathroom.
everyone laughed at my accidentally walking into the girls' bathroom --> CORRECT, because it's the action (my walking into the bathroom, not really me) that they're laughing at.
so, incredibly enough, the correct version of the sentence here would actually be "the fields' posing ...".
the gmat normally considers such constructions fatally awkward, and won't include them in correct answers (i believe this has been articulated in the official guide at a couple of different points, so i'm not just making an empirical claim). therefore, you can ignore such constructions outright, and eliminate choices that contain them.
incidentally, if the focus of the construction is the NOUN (or pronoun) itself, then you don't use a possessive. for instance:
i saw him walking down the street --> correct, because it was him i saw, not his walking action. this sentence is, however, ambiguous, because either he or i may have been the one walking down the street.
i saw his walking down the street wouldn't be incorrect, but it would be a bit strange, unless i'm a modeling scout who actually analyzes the gait of random strangers as they walk down the street.
Hi, Ron!
As for your explanation above,
"everyone laughed at me accidentally walking into the girls' bathroom",
why can't i consider "walking into the girls' bathroom" a noun modifier used to modify "me"?
Similar question in another sentence, too.
"i saw him walking down the street."
Why do you say that "walking down the street" is ambiguous?
According to TOUCH RULE, they are both closet to the preceding nouns. How do the ambiguity problem come? Does this problem relate to the fact that both "me" and "him" are pronouns?
If I say, "I saw the cat walking down the street", is there still an ambiguity problem?
Thanks a lot:)!!