OG Unlike the automobile company

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AbeNeedsAnswers: Master | Next Rank: 500 Posts; Posts: 394; Joined: Sun Jul 02, 2017 10:59 amFollowed by: 5 members; Thanked: 1 times

by AbeNeedsAnswers » Thu Aug 17, 2017 7:42 pm

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Unlike the automobile company, whose research was based on crashes involving sport utility vehicles, the research conducted by the insurance company took into account such factors as a driver'a age, GMAT, and previous driving record.

(A) company, whose research was based on
(B) company, which researched
(C) company, in its research of
(D) company's research, having been based on
(E) company's research on

E

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Source: Beat The GMAT — Sentence Correction | Thu Aug 17, 2017 7:42 pm

elias.latour.apex: Master | Next Rank: 500 Posts; Posts: 228; Joined: Thu Apr 20, 2017 1:02 amFollowed by: 3 members; Location: Global; Thanked: 32 times; GMAT Score:770

by elias.latour.apex » Mon Aug 21, 2017 7:00 am

The initial sentence seems to compare an automobile company to the research conducted by an insurance company. This makes no sense. Surely we want to compare the research conducted by the automobile company to the research conducted by the insurance company. Accordingly, choices (A), (B), and (C) are out.

Generally speaking, when confronted with two answers that have the same meaning, the shorter of the two should be preferred. Accordingly, (E) is our leading candidate. The extra words in (D) do not enhance the meaning in any fundamental way. Accordingly, the best answer is: Unlike the automobile company's research on crashes involving sport utility vehicles, the research conducted by the insurance company took into account such factors as a driver'a age, GMAT, and previous driving record.

Elias Latour
Verbal Specialist @ ApexGMAT
blog.apexgmat.com
+1 (646) 736-7622

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vietnam47: Master | Next Rank: 500 Posts; Posts: 110; Joined: Thu Apr 26, 2018 11:19 pmFollowed by: 1 member

by vietnam47 » Wed Jul 24, 2019 7:49 am

choice d suffer 2 mistake
first, "having been based..." refer to previous clause or following clause? be careful with middle modifier.

second, "having been based..." shows that this action happen before the action in the main clause. this is wrong." the research is based" should happen at the same time as the main action.

third, "having done" can not modify a preceding noun. this modification dose not exist in english. it seems that this modification happen in classic novel. but we dont care.
Having done... can modify the main clause, following or preceding. this means in choice d, "having been based..." modifies "research took...", and so, this modification is not logic.

in fact, there are 3 errors in choice d

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