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[RonPurewal]

i think i've seen "these" used as a pronoun in one official problem.
and the new OG has a problem that uses "this" as a pronoun (somewhere near the very beginning of the SC chapter).

in both cases, though, there are very very VERY clear and fundamental errors in all of the wrong answers.

so, regarding this question, the best advice is this:
• look for obvious / black-and-white / fundamental issues FIRST,
• ONLY THEN think about stuff like this.

in fact, that's ALWAYS the best advice for SC, but it's especially important for "weird" things. if a GMAC problem is ever constructed in an unusual way, or in a way that goes against GMAC's normal conventions, you should ALWAYS be able to eliminate the wrong answers for VERY clear, fundamental, black-and-white reasons.

[qianruS779]

Hi Ron,

Thank you very much for your excellent suggestion.

Best, Song

[RonPurewal]

you're welcome.