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# A Mars rover is an automated motor vehicle which propels itself across

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SC Moderator
Joined: 23 Sep 2015
Posts: 1716
A Mars rover is an automated motor vehicle which propels itself across  [#permalink]

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07 Oct 2018, 00:33
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Difficulty:

55% (hard)

Question Stats:

55% (01:16) correct 45% (01:17) wrong based on 152 sessions

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A Mars rover is an automated motor vehicle which propels itself across the surface of the planet Mars, gathering observations about the territory and conditions on Mars helping scientists determine whether life ever existed there.

(A) conditions on Mars helping
(B) conditions on Mars, with information helping
(C) conditions on Mars that help
(D) conditions on Mars, information that will help
(E) conditions on Mars, those that helped

source - CrackVerbal

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Director
Joined: 20 Feb 2015
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Concentration: Strategy, General Management
A Mars rover is an automated motor vehicle which propels itself across  [#permalink]

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07 Oct 2018, 01:30
aragonn wrote:
A Mars rover is an automated motor vehicle which propels itself across the surface of the planet Mars, gathering observations about the territory and conditions on Mars helping scientists determine whether life ever existed there.

(A) conditions on Mars helping
(B) conditions on Mars, with information helping
(C) conditions on Mars that help
(D) conditions on Mars, information that will help
(E) conditions on Mars, those that helped

source - CrackVerbal

(A) conditions on Mars helping
The verb+ing without comma is modifying Mars , the statement therefore means that Mars is helping scientists determine whether life ever existed there
--incorrect

(B) conditions on Mars, with information helping
with means alongside , the statement means gathering observations alongside helping determine whether life ever existed there
The construction is awkward and the sentence can be constructed in a better way.
--incorrect

(C) conditions on Mars that help
The essential modifier that is modifying Mars , essentially saying the same thing as A
--incorrect

(D) conditions on Mars, information that will help
Conveys the correct meaning that the information will help...
--Correct

(E) conditions on Mars, those that helped
What does "those" is referring to
moreover the past "helped" is incorrect
--incorrect

Imo D
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GMAT 1: 680 Q49 V34
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Re: A Mars rover is an automated motor vehicle which propels itself across  [#permalink]

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07 Oct 2018, 01:33
+1 for D

the noun+noun modifier rightly modifies the preceding clause.
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Re: A Mars rover is an automated motor vehicle which propels itself across  [#permalink]

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08 Oct 2018, 05:41

Official Explanation:

Concepts tested: Modifiers

A - Semantic error – the sentence implies that the territory and conditions on Mars can themselves help scientists determine whether life ever existed there. The observations about these are what will help scientists determine whether life ever existed there.
B - The use of ‘with’ is incorrect as it tampers with the meaning – not clear that the information that will help scientists is the information about territory and conditions on Mars.
C – Same as A
D – This option uses the right modifier and gives the right sense.
E - Tense mismatch – there is a shift from present to past; additionally, it is not clear what the antecedent of ‘those’ is – it can refer to ‘conditions’, ‘territory and conditions’, or ‘observations’. Thus, D is the right answer.
_________________
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
SVP
Joined: 26 Mar 2013
Posts: 2340
A Mars rover is an automated motor vehicle which propels itself across  [#permalink]

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12 Apr 2019, 16:01
aragonn wrote:
A Mars rover is an automated motor vehicle which propels itself across the surface of the planet Mars, gathering observations about the territory and conditions on Mars helping scientists determine whether life ever existed there.

(A) conditions on Mars helping
(B) conditions on Mars, with information helping
(C) conditions on Mars that help
(D) conditions on Mars, information that will help
(E) conditions on Mars, those that helped

source - CrackVerbal

Hi aragonn

This question has something error according to GMAT. 'which' must be preceded by comma. Hence, is not viable to see such construction.
"A Mars rover is an automated motor vehicle which propels itself across the surface of the planet Mars"
A Mars rover is an automated motor vehicle which propels itself across   [#permalink] 12 Apr 2019, 16:01
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# A Mars rover is an automated motor vehicle which propels itself across

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