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# None of the attempts to specify the causes of crime explains why most

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Manager
Joined: 29 Jun 2017
Posts: 243
Re: None of the attempts to specify the causes of crime explains why most [#permalink]

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16 Jan 2018, 20:30
Vithal wrote:
None of the attempts to specify the causes of crime explains why most of the people exposed to the alleged causes do not commit crimes and, conversely, why so many of those not so exposed have.

(A) have
(B) has
(C) shall
(D) do
(E) could

ellipsis rule is
if the latter part contains is/are, the first part must have a form of to be
if the latter part contain do/did, the first part must have action verb
if the latter part contains helping verb, the first part must contain the same helping verb which maybe is in different tesnse.
EMPOWERgmat Instructor
Joined: 23 Feb 2015
Posts: 241
Re: None of the attempts to specify the causes of crime explains why most [#permalink]

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31 Jan 2018, 15:33
Hi Vithal,

Thank you for your question. While this sentence is long-winded, a quick read-through shows that this is a simple comparison between two groups: people who do not commit crimes, and those who do (hint: I just gave away the answer!).

To determine which answer is correct, let’s look at how each of the answers would change the meaning of the sentence:

A: have
“Have” only considers those who committed crimes in the past, not the present. Since we’re comparing those who “do not” commit crimes, which is present tense, the other side should be in present tense too.

B: has
“Has” is a singular verb that doesn’t agree with the plural word it’s referring to (those). It also suggests comparing past crimes and present.

C: shall
“Shall” means they are comparing present tense with future tense, which isn’t parallel.

D: do
“Do” is correct! It uses parallel structure (do not commit crimes…those who do) and both are in present tense.

E: could
“Could” changes the meaning from discussing people who DO commit crimes with people who MIGHT, which is different.

So if we look at parallel structure (do not / do) and consistent verb tense, D is the clear winner!
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Re: None of the attempts to specify the causes of crime explains why most   [#permalink] 31 Jan 2018, 15:33

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# None of the attempts to specify the causes of crime explains why most

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