In his research paper, Dr. Frosh, medical director of the Payne Whitney Clinic, distinguishes mood swings. which may be violent without their being grounded in mental disease, from genuine manic-depressive psychosis.
(A)mood swings, which may be violent without their being grounded in mental disease, from genuine manic-depressive psychosis
(B)mood swings, perhaps violent without being grounded in mental disease, and genuine manic-depressive psychosis ,
(C)between mood swings, which may be violent without being grounded in mental disease, and genuine manic-depressive psychosis
(D)between mood swings, perhaps violent without being grounded in mental disease, from genuine manic-depressive psychosis
(E)genuine manic-depressive psychosis and mood swings, which may be violent without being grounded in mental disease
What sort of problem(s)in the options B and D?
Would any one explain "perhaps violent..." part as modifier?
Thanks.
OG10 SC
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- gmat_perfect
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- VivianKerr
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Yup, this one comes down to Idiom. The answer is C.
We've got two Idioms to choose from:
Distinguishes between X and Y.
or
Distinguishes X from Y.
You're correct that "perhaps violent..." would be a modifying clause, but B breaks the Idiom because there is no "between" but they are using the word "and".
D is incorrect because it also breaks the Idiom. It uses "between" and then tries to pair it with "from" which is wrong. We can use "between...and" OR "from" but you cannot mix and match.
We've got two Idioms to choose from:
Distinguishes between X and Y.
or
Distinguishes X from Y.
You're correct that "perhaps violent..." would be a modifying clause, but B breaks the Idiom because there is no "between" but they are using the word "and".
D is incorrect because it also breaks the Idiom. It uses "between" and then tries to pair it with "from" which is wrong. We can use "between...and" OR "from" but you cannot mix and match.
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- gmat_perfect
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Thanks for the reply. I know the idiom "between X and Y", where X and Y must be grammatically parallel. I wanted to know what sort of problem(s)in B and D has/have been made by "perhaps violent..." part?
Thanks.
Thanks.
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The "perhaps violent..." part is okay. It could potentially be correct if the Idiom itself wasn't wrong.
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- VivianKerr
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A is much more awkward than C. "Their" is unnecessary - the sentence would make more sense without it.
By the way, just searched and found two other discussions on this questions if you're interested:
https://www.beatthegmat.com/when-can-we- ... 15407.html
https://www.beatthegmat.com/distunguish- ... 15177.html
By the way, just searched and found two other discussions on this questions if you're interested:
https://www.beatthegmat.com/when-can-we- ... 15407.html
https://www.beatthegmat.com/distunguish- ... 15177.html
Vivian Kerr
GMAT Rockstar, Tutor
https://www.GMATrockstar.com
https://www.yelp.com/biz/gmat-rockstar-los-angeles
Former Kaplan and Grockit instructor, freelance GMAT content creator, now offering affordable, effective, Skype-tutoring for the GMAT at $150/hr. Contact: [email protected]
Thank you for all the "thanks" and "follows"!
GMAT Rockstar, Tutor
https://www.GMATrockstar.com
https://www.yelp.com/biz/gmat-rockstar-los-angeles
Former Kaplan and Grockit instructor, freelance GMAT content creator, now offering affordable, effective, Skype-tutoring for the GMAT at $150/hr. Contact: [email protected]
Thank you for all the "thanks" and "follows"!
- gmat_perfect
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