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Sub 505 Level|   Modifiers|   Parallelism|      
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Bhai
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Scientists have suggested that once every 10 million years or so a Updated on: 29 Apr 2018, 14:53
Originally posted by Bhai on 13 Jul 2004, 19:22.
Last edited by BillyZ on 29 Apr 2018, 14:53, edited 1 time in total.
Edited the question.
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A
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!

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5% (low)

Question Stats:

80% (01:12) correct 20% (01:22) wrong based on 772 sessions

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Scientists have suggested that once every 10 million years or so a truly colossal object from space cuts through the atmosphere and slams into Earth, sending up a global pall of dust that blots out the Sun, alters the climate, and changes the course of evolution by killing off many plant and animal species.

(A) sending up a global pall of dust that blots

(B) thus sending up a global pall of dust to blot

(C) thereby sending up a global pall of dust to blot

(D) and that sends up a global pall of dust, blotting

(E) which sends up a global pall of dust, blots
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A
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Paul
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Scientists have suggested that once every 10 million years or so a 13 Jul 2004, 19:50
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A it is. E sounds like the Earth sends things up...
B, C and D not parallel verb tense
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ashkg
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Scientists have suggested that once every 10 million years or so a 13 Jul 2004, 20:02
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global pall of dust that blots, alters the climate, and changes......

A is the most parallel and best answer.

DE also change the meaning.

- ash
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Scientists have suggested that once every 10 million years or so a 13 Jul 2004, 22:58
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E.

which sends up a global pall of dust, blots out the Sun, alters the climate, and changes the course of evolution....

no issue with //lism
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manan
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Scientists have suggested that once every 10 million years or so a 13 Jul 2004, 23:26
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close call b/w E and D for me... will go with D

'sends'/ 'blotting' parallel to 'changes' / 'killing'

what's the OA please?
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Scientists have suggested that once every 10 million years or so a 13 Jul 2004, 23:47
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Only A and E maintain the parallel structrure : blots...,alters... and changes...
But as Paul said "which=earth" in E. So the sentence would mean that

Earth sends up a global pall of dust,
Earth blots the sun,
Earth alters the climate, and
Earth changes the course of evolution by
killing off many plant and animal species

I think it would be more logical if the global pall of dust caused these effects. (as suggested in A)

So I will go for A
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Scientists have suggested that once every 10 million years or so a 14 Jul 2004, 09:45
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With E, I did not see //ism issue but I did only half the job.As Paul mentioned, E implies Earth sending the stuff which is wrong. Good discussion.
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Scientists have suggested that once every 10 million years or so a 02 Aug 2007, 08:38
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Scientists have suggested that once every 10 million years or so a truly colossal object from space cuts through the atmosphere and slams into Earth, sending up a global pall of dust that blots out the Sun,
alters the climate, and
changes the course of evolution by killing off many plant and animal species.

participial phrase modifying the noun in the independent clause.
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GMATBLACKBELT
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Scientists have suggested that once every 10 million years or so a 02 Aug 2007, 18:49
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Bhai
4. Scientists have suggested that once every 10 million
years or so a truly colossal object from space cuts
through the atmosphere and slams into Earth, sending
up a global pall of dust that blots out the Sun, alters
the climate, and changes the course of evolution by
killing off many plant and animal species.

(A) sending up a global pall of dust that blots
(B) thus sending up a global pall of dust to blot
(C) thereby sending up a global pall of dust to blot
(D) and that sends up a global pall of dust, blotting
(E) which sends up a global pall of dust, blots


A

It is tempting to thinking that "sending isn't parallel." However, blots is what needs to be parallel w/ alters, & "changes" not sending. So A is correct.
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Scientists have suggested that once every 10 million years or so a 03 Aug 2007, 08:35
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I'd go with A too.

E changes the meaning of the sentence. It is the dust that results in blotting out the sun, altering climate bla bla bla. But with E, it makes it sound like the dust is one of the effect just like climate change bla bla bla.


Bhai
4. Scientists have suggested that once every 10 million
years or so a truly colossal object from space cuts
through the atmosphere and slams into Earth, sending
up a global pall of dust that blots out the Sun, alters
the climate, and changes the course of evolution by
killing off many plant and animal species.

(A) sending up a global pall of dust that blots
(B) thus sending up a global pall of dust to blot
(C) thereby sending up a global pall of dust to blot
(D) and that sends up a global pall of dust, blotting
(E) which sends up a global pall of dust, blots
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Scientists have suggested that once every 10 million years or so a 23 Jan 2019, 18:09
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Bhai
Scientists have suggested that once every 10 million years or so a truly colossal object from space cuts through the atmosphere and slams into Earth, sending up a global pall of dust that blots out the Sun, alters the climate, and changes the course of evolution by killing off many plant and animal species.


Concept Tested:


Parallelism, Modifiers & Meaning

Original Meaning:


1) Modifier & Meaning: We need a verb-ing modifier, which can be used to modify the previous action of "colossal object... cuts ... and slams". Using any other modifier such as "which" or structure starting with "and" that does not reflect the same meaning is incorrect.
2) Parallelism: There is a list of 3 things: blots, alters & changes

(A) sending up a global pall of dust that blots - Correct

(B) thus sending up a global pall of dust to blot - Wrong: Parallelism. "to blot" not parallel to "alters" and "changes"

(C) thereby sending up a global pall of dust to blot - Wrong: Parallelism. "to blot" not parallel to "alters" and "changes"

(D) and that sends up a global pall of dust, blotting - Wrong: Change in meaning due to "and"

(E) which sends up a global pall of dust, blots - Wrong: Modifier issue due to "which"
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Scientists have suggested that once every 10 million years or so a 05 Nov 2019, 18:01
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My views over this SC problem.

Slamming of object on earth results the pall of dust.....D and E are out.

after this there are two ways to understand this statement.
1. Whether the purpose of slamming of object is to blot the sun.....etc..
or 2. it is the pall of dust that causes further consequences.

B and C, correct use of thereby and thus but both goes along with statement 2 mentioned in my explanation. But this is not the meaning and, hence, not correct.

Remaining is A and is perfect in meaning and grammar.
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Scientists have suggested that once every 10 million years or so a 02 Jun 2022, 11:16
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