This question is from this previous thread:
http://www.manhattangmat.com/forums/in- ... -t499.html
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#15 Because she knew many of the leaders of colonial America and the American Revolution personally, Mercy Otis Warren was continually at or near the center of political events from 1765 to 1789, a vantage point combining with her talent for writing to make her one of the most valuable historians of the era
(A) same as above
(B) a vantage point, when combined with her talent for writing, that made
(C) a vantage point that combined with her talent for writing, and it made
(D) and this vantage point, which combined with her talent for writing to make
(E) and this vantage point, combined with her talent for writing, made
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I crossed out A and D because of tense (made vs make). C seems like it has an unnecessary 'it'.
I understand that the OA is E. Between B and E, I picked B because there are other questions, for example this one:
http://www.manhattangmat.com/forums/a-g ... -t556.html
where a noun is used after the comma for clarity. Also, I have not seen many many correct answers that have the form , and (i.e. comma followed by and). In fact, see the paleontologists link for examples of this.
With respect to the paleontologists question and this question, can you confirm when it is reasonable to use the two different forms:
, and ...
, <noun> ...
Is there a "rule"?