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souvik101990
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Expert reply
19 Feb 2015, 01:04
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D
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
5%
(low)
Question Stats:
94% (00:42) correct
6%
(01:05)
wrong
based on 1852
sessions
History
Date
Time
Result
Not Attempted Yet
This question is part of the GMAT Club Sentence Correction : Parallelism" Revision Project.
Foods high in tryptophan, an amino acid that is a precursor to serotonin, can help people to fall asleep by reducing anxiety, relaxing the brain, and in regulating the sleep cycle.
A. reducing anxiety, relaxing the brain, and in regulating
B. means of reducing anxiety, relaxing the brain, and in the regulation of
C. reducing anxiety, relaxing the brain, and regulation of
D. reducing anxiety, relaxing the brain, and regulating
E. means of reducing anxiety, relaxing the brain, and regulating
Foods high in tryptophan, an amino acid that is a precursor to serotonin, can help people to fall asleep by reducing anxiety, relaxing the brain, and in regulating the sleep cycle.
A. reducing anxiety, relaxing the brain, and in regulating
B. means of reducing anxiety, relaxing the brain, and in the regulation of
C. reducing anxiety, relaxing the brain, and regulation of
D. reducing anxiety, relaxing the brain, and regulating
E. means of reducing anxiety, relaxing the brain, and regulating
A list of three things is underlined in the original sentence, indicating the need to test
the sentence for parallelism. According to the non-underlined portion of the sentence,
the three verbs starting each item in the list indicate how the substance (tryptophan)
helps people to fall asleep: by "reducing", "relaxing" and "regulating." At first glance, it
appears that these 3 verbs - each ending in "ing" - are nicely parallel. However,
consider that the list is introduced by the preposition "by." It should read "by x, y, and
z" where x, y, and z are parallel. Instead, the list reads "by x, y, and in z." The use of
the word "in" to introduce the third element in the list throws off the parallelism and
creates a nonsensical phrase: "by . . .in regulating."
(A) This choice is incorrect because it repeats the original sentence.
(B) This choice does not correct the original parallelism error; it still uses "in" to
introduce the third item in the list. Moreover, that third item--"the regulation of"--is no
longer in the "ing" form, further distorting the parallel structure. Finally, the choice
creates a new problem. "By" is sufficient to introduce the three items in the list; "by
means of" is redundant.
(C) This choice correctly omits the word "in" when introducing the third item on the
list. However, the phrase "regulation of" is no longer parallel with the "ing" endings of
the first two items on the list.
(D) CORRECT. This choice corrects the original error by omitting the word "in" when
introducing the third item on the list. The three items now follow the parallel structure
"by x, y, and z."
(E) This choice corrects the original error by omitting the word "in" when introducing
the third item on the list. The three items now follow the parallel structure "by x, y, and
z." The choice creates a new problem, however. "By" is sufficient to introduce the
three items in the list; "by means of" is redundant.
the sentence for parallelism. According to the non-underlined portion of the sentence,
the three verbs starting each item in the list indicate how the substance (tryptophan)
helps people to fall asleep: by "reducing", "relaxing" and "regulating." At first glance, it
appears that these 3 verbs - each ending in "ing" - are nicely parallel. However,
consider that the list is introduced by the preposition "by." It should read "by x, y, and
z" where x, y, and z are parallel. Instead, the list reads "by x, y, and in z." The use of
the word "in" to introduce the third element in the list throws off the parallelism and
creates a nonsensical phrase: "by . . .in regulating."
(A) This choice is incorrect because it repeats the original sentence.
(B) This choice does not correct the original parallelism error; it still uses "in" to
introduce the third item in the list. Moreover, that third item--"the regulation of"--is no
longer in the "ing" form, further distorting the parallel structure. Finally, the choice
creates a new problem. "By" is sufficient to introduce the three items in the list; "by
means of" is redundant.
(C) This choice correctly omits the word "in" when introducing the third item on the
list. However, the phrase "regulation of" is no longer parallel with the "ing" endings of
the first two items on the list.
(D) CORRECT. This choice corrects the original error by omitting the word "in" when
introducing the third item on the list. The three items now follow the parallel structure
"by x, y, and z."
(E) This choice corrects the original error by omitting the word "in" when introducing
the third item on the list. The three items now follow the parallel structure "by x, y, and
z." The choice creates a new problem, however. "By" is sufficient to introduce the
three items in the list; "by means of" is redundant.
20 Feb 2015, 11:50
Kudos
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souvik101990
Though option D is grammatically correct, Option D and E have a very suttle difference.
while option D suggests that it is the FOOD itself which reduce anxiety etc.., option E makes it clear that FOOD is acting as a means of achieving lower anxiety etc..
option E is right answer IMO.
thanks
General Discussion
19 Feb 2015, 04:43
Kudos
Bookmarks
Foods high in tryptophan, an amino acid that is a precursor to serotonin, can help people to fall asleep by
reducing anxiety,
relaxing the brain,
and
in regulating the sleep cycle.
A. reducing anxiety, relaxing the brain, and in regulating
B. means of reducing anxiety, relaxing the brain, and in the regulation of
C. reducing anxiety, relaxing the brain, and regulation of
D. reducing anxiety, relaxing the brain, and regulating - correct.
E. means of reducing anxiety, relaxing the brain, and regulating
reducing anxiety,
relaxing the brain,
and
in regulating the sleep cycle.
A. reducing anxiety, relaxing the brain, and in regulating
B. means of reducing anxiety, relaxing the brain, and in the regulation of
C. reducing anxiety, relaxing the brain, and regulation of
D. reducing anxiety, relaxing the brain, and regulating - correct.
E. means of reducing anxiety, relaxing the brain, and regulating
