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# After thoroughly investigating the Columbia space shuttle accident

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After thoroughly investigating the Columbia space shuttle accident  [#permalink]

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25 Jul 2018, 02:53
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45% (medium)

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58% (01:10) correct 42% (01:03) wrong based on 256 sessions

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After thoroughly investigating the Columbia space shuttle accident, the investigation board issued its report stating that if the NASA management would not have compromised on Columbia’s safety, the disaster could have been avoided.

A. if the NASA management would not have compromised on Columbia’s safety
B. had the NASA management not compromised on Columbia’s safety
C. if the NASA management would not have made a compromise on Columbia’s safety
D. if the NASA management had not compromised on Columbia’s safety
E. if the NASA management did not compromise on Columbia’s safety

source - expert global

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Re: After thoroughly investigating the Columbia space shuttle accident  [#permalink]

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25 Jul 2018, 03:59
1
aragonn wrote:
After thoroughly investigating the Columbia space shuttle accident, the investigation board issued its report stating that if the NASA management would not have compromised on Columbia’s safety, the disaster could have been avoided.

A. if the NASA management would not have compromised on Columbia’s safety
B. had the NASA management not compromised on Columbia’s safety
C. if the NASA management would not have made a compromise on Columbia’s safety
D. if the NASA management had not compromised on Columbia’s safety
E. if the NASA management did not compromise on Columbia’s safety

source - expert global

+1 for D

A. if the NASA management would not have compromised on Columbia’s safety - Event happened in the past
B. had the NASA management not compromised on Columbia’s safety - if condition is removed
C. if the NASA management would not have made a compromise on Columbia’s safety
D. if the NASA management had not compromised on Columbia’s safety - This is correct
E. if the NASA management did not compromise on Columbia’s safety
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After thoroughly investigating the Columbia space shuttle accident  [#permalink]

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25 Jul 2018, 07:43
aragonn wrote:
After thoroughly investigating the Columbia space shuttle accident, the investigation board issued its report stating that if the NASA management would not have compromised on Columbia’s safety, the disaster could have been avoided.

A. if the NASA management would not have compromised on Columbia’s safety
B. had the NASA management not compromised on Columbia’s safety
C. if the NASA management would not have made a compromise on Columbia’s safety
D. if the NASA management had not compromised on Columbia’s safety
E. if the NASA management did not compromise on Columbia’s safety

source - expert global
Correct Answer must be (D) for the highlighted errors in other options.
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Re: After thoroughly investigating the Columbia space shuttle accident  [#permalink]

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25 Jul 2018, 08:57
Although I picked up D, I have doubt here. Why B is wrong? Subject-verb inversion concept is used in B.

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Re: After thoroughly investigating the Columbia space shuttle accident  [#permalink]

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25 Jul 2018, 16:03
So First split is timeline - Nasa first compromised the safety and then accident happened. So first glance gives that answers should be around B/D.

Problem with B is its construction. As mentioned in above post, The way 'had' used is really reckless. even if 'had' were at its right position, it would need a conditional statement to fulfill its sense/meaning. On the other hand D make sense cause it rectified all those mistakes.
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Thanks!
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Simple strategy:
“Once you’ve eliminated the impossible, whatever remains, however improbable, must be the truth.”

Want to improve your Score:
GMAT Ninja YouTube! Series 1| GMAT Ninja YouTube! Series 2 | How to Improve GMAT Quant from Q49 to a Perfect Q51 | Time management

My Notes:
Reading comprehension | Critical Reasoning | Absolute Phrases | Subjunctive Mood
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Re: After thoroughly investigating the Columbia space shuttle accident  [#permalink]

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10 Aug 2018, 16:28
aragonn wrote:
After thoroughly investigating the Columbia space shuttle accident, the investigation board issued its report stating that if the NASA management would not have compromised on Columbia’s safety, the disaster could have been avoided.

A. if the NASA management would not have compromised on Columbia’s safety
B. had the NASA management not compromised on Columbia’s safety
C. if the NASA management would not have made a compromise on Columbia’s safety
D. if the NASA management had not compromised on Columbia’s safety
E. if the NASA management did not compromise on Columbia’s safety

source - expert global

Correct form of verb pattern in conditional clause.
D is the answer. "If .... had verb-ed, .... could have been verb-ed".
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Re: After thoroughly investigating the Columbia space shuttle accident  [#permalink]

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12 Aug 2018, 13:51
I have a query here, I feel option B is also a correct as it talks about a condition as well. Not all conditionals start with 'if'or is this form of conditional not accepted on the GMAT. daagh, mikemcgarry pls help out here.

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Re: After thoroughly investigating the Columbia space shuttle accident  [#permalink]

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12 Aug 2018, 18:47
Kem12

Biggest issue with B is of time line. you are putting had . that part is past perfect tense, which demands the presence of a relative past tense. Regarding your second query, i don't think without 'if' this will called condition in GMAT standards.
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Thanks!
Do give some kudos.

Simple strategy:
“Once you’ve eliminated the impossible, whatever remains, however improbable, must be the truth.”

Want to improve your Score:
GMAT Ninja YouTube! Series 1| GMAT Ninja YouTube! Series 2 | How to Improve GMAT Quant from Q49 to a Perfect Q51 | Time management

My Notes:
Reading comprehension | Critical Reasoning | Absolute Phrases | Subjunctive Mood
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After thoroughly investigating the Columbia space shuttle accident  [#permalink]

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12 Aug 2018, 19:59
aragonn wrote:
After thoroughly investigating the Columbia space shuttle accident, the investigation board issued its report stating that if the NASA management would not have compromised on Columbia’s safety, the disaster could have been avoided.

A. if the NASA management would not have compromised on Columbia’s safety
B. had the NASA management not compromised on Columbia’s safety
C. if the NASA management would not have made a compromise on Columbia’s safety
D. if the NASA management had not compromised on Columbia’s safety
E. if the NASA management did not compromise on Columbia’s safety

source - expert global

aragonn wrote:
A. if the NASA management would not have compromised on Columbia’s safety

Here, usage of 'would' is wrong as would suggests improbable statement but we know that NASA Management has compromised on Columbia's safety for sure. Hence Incorrect.

aragonn wrote:
B. had the NASA management not compromised on Columbia’s safety

Constructions such as "If X, then Y" (or simply "If X, Y") helps to express a particular logical relationship between facts X and Y. So avoiding 'if' does not help us in bridging that logical gap. Hence Incorrect.

aragonn wrote:
C. if the NASA management would not have made a compromise on Columbia’s safety

Here, usage of 'would' is wrong as would suggests improbable statement but we know that NASA Management has compromised on Columbia's safety for sure. Hence Incorrect.

aragonn wrote:
D. if the NASA management had not compromised on Columbia’s safety

A past perfect is the correct tense used in an 'If' condition, when the resultant is a probable statement (the disaster could have been avoided)

aragonn wrote:
E. if the NASA management did not compromise on Columbia’s safety

'Did not' is used when we are expressing in simple past. But here we are set the series of event as they unfolded. That is first NASA management compromised on safety, then disaster happened. Hence 'had not' is correct here. Hence Incorrect.
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Re: After thoroughly investigating the Columbia space shuttle accident  [#permalink]

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13 Aug 2018, 02:30
aragonn wrote:
After thoroughly investigating the Columbia space shuttle accident, the investigation board issued its report stating that if the NASA management would not have compromised on Columbia’s safety, the disaster could have been avoided.

A. if the NASA management would not have compromised on Columbia’s safety
B. had the NASA management not compromised on Columbia’s safety
C. if the NASA management would not have made a compromise on Columbia’s safety
D. if the NASA management had not compromised on Columbia’s safety
E. if the NASA management did not compromise on Columbia’s safety

source - expert global
This is unreal condition in past. The structure will be:
If + subject + past perfect + would/could/might + have + verb in past participle.

Option D follows this structure.

So I choose D

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Re: After thoroughly investigating the Columbia space shuttle accident  [#permalink]

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20 Sep 2018, 23:57
One another confusion that students generally have on this question is between Options D and E.

While Option B seems to be right based on colloquial usage, GMAT always prefers standard construction of sentences over popular colloquial usage. Hence, since the question is talking about a condition (Cause-effect) relationship, it is better to use the word "if".

Now let us come to the options D and E, both of which are in the past tense. The rest of the sentence is in past perfect tense and one rule that GMAT dictates is to keep the verb tense of the sentence consistent unless there is a shift in meaning. This makes Option D a better choice than Option E is.

Hope that helps.

Thanks,

Dudyala Saikiran
Byju's GMAT Expert.
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Re: After thoroughly investigating the Columbia space shuttle accident   [#permalink] 20 Sep 2018, 23:57
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# After thoroughly investigating the Columbia space shuttle accident

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