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The study....

by AIM GMAT » Mon Mar 21, 2011 12:09 am
The study, called the National Lung Screening Trial, focused on a specific high"risk
group: 53,000 current and former heavy smokers, aging from 55 to 74, which had
smoked for at least 30 pack"years

A. group: 53,000 current and former heavy smokers, aging from 55 to 74, which
had smoked for at least 30 pack"years

B. group: 53,000 current and former heavy smokers, aged 55 to 74, that had
smoked for at least 30 pack"years

C. group: 53,000 current and former heavy smokers, aged 55 to 74, who
smoked for at least 30 pack"years

D. group: 53,000 current and former heavy smokers, aged 55 to 74, who
had smoked for at least 30 pack"years

E. group: 53,000 current and former heavy smokers, who were aged 55 to
74,and who had smoked for higher than at least 30 pack"years


I will ask my actual doubt after some repies . Give it a try .
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by bubbliiiiiiii » Mon Mar 21, 2011 12:26 am
IMO C. Was tempted with E but chose C.
AIM GMAT wrote:The study, called the National Lung Screening Trial, focused on a specific high"risk
group: 53,000 current and former heavy smokers, aging from 55 to 74, which had
smoked for at least 30 pack"years

A. group: 53,000 current and former heavy smokers, aging from 55 to 74, whichhad smoked for at least 30 pack"years

B. group: 53,000 current and former heavy smokers, aged 55 to 74, that had
smoked for at least 30 pack"years

C. group: 53,000 current and former heavy smokers, aged 55 to 74, who
smoked for at least 30 pack"years

D. group: 53,000 current and former heavy smokers, aged 55 to 74, who
had smoked for at least 30 pack"years

E. group: 53,000 current and former heavy smokers, who were aged 55 to
74,and who had smoked for higher than at least 30 pack"years


I will ask my actual doubt after some repies . Give it a try .
Last edited by bubbliiiiiiii on Mon Mar 21, 2011 1:37 am, edited 1 time in total.
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by HSPA » Mon Mar 21, 2011 12:48 am
Reject A, B : we need who as we are talking about persons ( B is a close contender : if it is a group)

We need had : past perfect (who had been smoking for atleast 30 years)

we are left with D and E

we need men who "are" aged 55 to 74 at present.. people with 55 cannot have 30years exp 30 years back


SO POE : D, B

Please explain use of colon in a given sentence AIM..
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by tetura84 » Mon Mar 21, 2011 3:26 am
A & B out because pronoun which/that is for non-human beings.
For human being, use who.

I rejected E for 2 reasons,
1. wordy
2. higher than at least 30 pack-�years = this is redundant

C is wrong, because past perfect tense is required. Here we are relating two past events, if we use simple past tenses, we cannot relate these events.
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by AIM GMAT » Mon Mar 21, 2011 3:34 am
OA is D

I was really not sure why we need past perfect here i cannot relate with two activities going on diff span of time .
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by GMATGuruNY » Mon Mar 21, 2011 4:04 am
AIM GMAT wrote:OA is D

I was really not sure why we need past perfect here i cannot relate with two activities going on diff span of time .
The people in the study were former smokers: thus, they had smoked prior to the study. The past perfect makes it clear that the people were no longer smoking when the study focused on them.
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by AIM GMAT » Mon Mar 21, 2011 4:09 am
Thanks Mitch , now the sceanario is clear , happened to faultly assume that the smokers are still heavy smokers . Silly me :)
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by tetura84 » Mon Mar 21, 2011 5:58 am
Mitch, the people in the study were former smokers as well as current smokers.
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by GMATGuruNY » Mon Mar 21, 2011 6:22 am
tetura84 wrote:Mitch, the people in the study were former smokers as well as current smokers.
Point taken. But the adjective former helps to make clear that the smoking had taken place before the study, so the past perfect is needed.

By the way, what is the source of this question? The OA seems to be a direct quote from the New York Times:

https://well.blogs.nytimes.com/2010/11/1 ... -ct-scans/
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by AIM GMAT » Mon Mar 21, 2011 6:26 am
Thanks Mitch and tetura .

The source is SC Grail .
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by tetura84 » Mon Mar 21, 2011 7:30 am
Thanks Mitch, that's what I also thought. :)
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by Target2009 » Mon Mar 21, 2011 9:14 pm
+1 D
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