Dear Friends,
Here is a detailed explanation to this question-
MonkeyDDes
To date, some 70 cities have used federal government funding for the buybacks,
in purchase of some 17,000 guns.A. in purchase of some 17,000 guns.
B. the purchase of some 17,000 guns.
C. in the purchasing of some 17,000 guns.
D. purchasing some 17,000 guns.
E. purchasing some of the 17,000 guns.
Meaning is crucial to solving this problem:Understanding the intended meaning is key to solving this question; the intended meaning of this sentence is that approximately 70 cities have used federal government funding for the buybacks, and in doing so purchased approximately 17,000 guns in aggregate.
Concepts tested here: Meaning + Verb Forms + Idioms + Awkwardness/Redundancy• In a “noun + comma + phrase” construction, the phrase must correctly modify the noun; this is one of the most frequently tested concepts on GMAT sentence correction.
• The introduction of present participle ("verb+ing"- “purchasing” in this case) after comma generally leads to a cause-effect relationship.
• "some + number" conveys the same meaning as "approximately + number"; "some + noun" refers to an indeterminate number of the noun, and "some + of" refers to a portion among a set.
A: This answer choice alters the meaning of the sentence through the phrase "in purchase of some 17,000 guns"; the construction of this phrase illogically implies that approximately 70 cities have used federal government funding for the buybacks,
specifically to purchase approximately 17,000 guns
each; the intended meaning is that approximately 70 cities have used federal government funding for the buybacks, and
in doing so purchased approximately 17,000 guns
in aggregate.
B: This answer choice incorrectly modifies "the buybacks" with "the purchase of some 17,000 guns", incorrectly implying that approximately 70 cities have used federal government funding for the buybacks, which are
in their entirety the purchase of approximately 17,000 guns; the intended meaning is that approximately 70 cities have used federal government funding for the buybacks, and
a result of this action has been the purchase of 17,000 guns; please remember, in a “noun + comma + phrase” construction, the phrase must correctly modify the noun.
C: This answer choice alters the meaning of the sentence through the phrase "in the purchasing of some 17,000 guns"; the construction of this phrase illogically implies that approximately 70 cities have used federal government funding for the buybacks,
specifically to purchase approximately 17,000 guns
each; the intended meaning is that approximately 70 cities have used federal government funding for the buybacks, and
in doing so purchased approximately 17,000 guns
in aggregate. Further, Option C uses the needlessly wordy phrase "in the purchasing", leading to awkwardness and redundancy.
D: Correct. This answer choice uses the phrase "purchasing some 17,000 guns"; the use of the "comma + present participle ("verb+ing" - "purchasing" in this sentence) and the construction "some + number ("17,000")" convey the intended meaning - that approximately 70 cities have used federal government funding for the buybacks, and as a result, they purchased approximately 17,000 guns in aggregate; the introduction of the present participle ("verb+ing"- “purchasing” in this case) after comma generally leads to a cause-effect relationship. Further, Option D is free of any awkwardness or redundancy.
E: This answer choice alters the meaning of the sentence through the phrase "some of the 17,000 guns"; the use of the construction "some + of" incorrectly implies that approximately 70 cities have used federal government funding for the buybacks, and in doing so purchased
a portion of a set of 17,000 guns; please remember, "some + number" conveys the same meaning as "approximately + number", "some + noun" refers to an indeterminate number of the noun, and "some + of" refers to a portion among a set.
Hence, D is the best answer choice. To understand the concept of "Comma plus Present Participle for Cause Effect relationship", you may want to watch the following video (~2 minutes):
To understand the concept of "Phrase Comma Subject" and "Subject Comma Phrase" on GMAT, you may want to watch the following video (~1 minute):
All the best!
Experts' Global Team