gmathopeful25
One thing people need to keep in mind is that test prep companies have come up with a lot of so called rules for SC that have later been proven to be wrong.
Hi gmathopeful25, a large part of the
rules that test prep companies
preach comes directly from the
patterns of official sentences themselves.
I remember that in an official guide many generations old (older than OG-10, as far as I remember), one of the explanations provided in the OG stated that an
object pronoun cannot refer to a
possessive noun.
With such explicit
hint, test prep companies adopted this as a
rule until few generations (of official guides) later, we spotted
correct official sentences that
violated this rule. I would not call this a
contradiction in Official guide. With time, perhaps GMAT just
evolves in its preferences, and test-prep companies adapt accordingly.