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aragonn
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Researchers of the Antikythera mechanism claim the retrieval of this a 20 Apr 2018, 03:59
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E
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!

Difficulty:

45% (medium)

Question Stats:

65% (01:39) correct 35% (01:36) wrong based on 286 sessions

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Researchers of the Antikythera mechanism claim the retrieval of this ancient Greek analog computer dating to circa 205-100 B.C.E. suggest their development of complex gear systems, the demonstration of meticulous workmanship, and achievement of remarkably exact and accurate calculations happened several centuries, almost a millennium, before a European device of similar complexity appeared.

A. suggest their development of complex gear systems, the demonstration of
B. suggest that the development of complex gear systems, demonstrating
C. suggests that their development of complex gear systems, demonstrating
D. suggests the development of complex gear systems, their demonstration of
E. suggests that the development of complex gear systems, the demonstration of
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E
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Researchers of the Antikythera mechanism claim the retrieval of this a 20 Apr 2018, 05:36
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IMO B
Reason- subjunctive verb form + that
, correct parallelism between development and achievement, and demonstrating clearly modifying the previous clause

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Researchers of the Antikythera mechanism claim the retrieval of this a 20 Apr 2018, 07:19
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aggvipul
IMO B
Reason- subjunctive verb form + that
, correct parallelism between development and achievement, and demonstrating clearly modifying the previous clause

Sent from my Redmi 4 using GMAT Club Forum mobile app
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I dont think it can be B because "the retrieval" is singular and verb is plural (suggest). So A and B are eliminated.

though, OA is E but i found a few problems in the answer if someone could correct me.
1) This answer gives a list: the development.....the demonstration....and achievement .. I dont think this list is parallel because there is no 'the' before achievement in the non-underlined portion.
2) It also seems that the development demonstrated their work and achievement and not as separate entities.

Hence IMO ans should be C
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Researchers of the Antikythera mechanism claim the retrieval of this a 20 Apr 2018, 09:14
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aragonn
Researchers of the Antikythera mechanism claim the retrieval of this ancient Greek analog computer dating to circa 205-100 B.C.E. suggest their development of complex gear systems, the demonstration of meticulous workmanship, and achievement of remarkably exact and accurate calculations happened several centuries, almost a millennium, before a European device of similar complexity appeared.

A. suggest their development of complex gear systems, the demonstration of
B. suggest that the development of complex gear systems, demonstrating
C. suggests that their development of complex gear systems, demonstrating
D. suggests the development of complex gear systems, their demonstration of
E. suggests that the development of complex gear systems, the demonstration of
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I think the answer here is E. The parallel construction in E is correct and so is the use of 'suggests that' linking back to 'the retrieval'.
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Researchers of the Antikythera mechanism claim the retrieval of this a 20 Apr 2018, 10:03
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Imo E.. parallel construction.

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Researchers of the Antikythera mechanism claim the retrieval of this a 20 Apr 2018, 10:51
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mailabhishekmathur
aggvipul
IMO B
Reason- subjunctive verb form + that
, correct parallelism between development and achievement, and demonstrating clearly modifying the previous clause

Sent from my Redmi 4 using GMAT Club Forum mobile app

I dont think it can be B because "the retrieval" is singular and verb is plural (suggest). So A and B are eliminated.
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You are right here that B is not the answer because it is using plural verb form suggest.

mailabhishekmathur
though, OA is E but i found a few problems in the answer if someone could correct me.
1) This answer gives a list: the development.....the demonstration....and achievement .. I dont think this list is parallel because there is no 'the' before achievement in the non-underlined portion.
2) It also seems that the development demonstrated their work and achievement and not as separate entities.

Hence IMO ans should be C
Show more

1) This answer gives a list: the development.....the demonstration....and achievement .. I dont think this list is parallel because there is no 'the' before achievement in the non-underlined portion - simple use of "the" should not be the only criteria for checking parallelism. Notice here that all three are phrases, talk about the same action and
2) It also seems that the development demonstrated their work and achievement and not as separate entities. - Since all the three elements are parallel they are working as separate entities.

Option C uses pronoun "their" which is ambiguous as we do not know its clear antecedent. It can be either be Researchers or ancient Greek. Also note here that
"their" is a possessive noun and it must refer back to possessive noun only, logically "their" should refer to Greek but in sentence "Greek" is nowhere given, hence option C is wrong.
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Researchers of the Antikythera mechanism claim the retrieval of this a 20 Apr 2018, 12:04
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aragonn
Researchers of the Antikythera mechanism claim that the retrieval of this ancient Greek analog computer dating to circa 205-100 B.C.E. suggest their development of complex gear systems, the demonstration of meticulous workmanship, and achievement of remarkably exact and accurate calculations happened several centuries, almost a millennium, before a European device of similar complexity appeared.

A. suggest their development of complex gear systems, the demonstration of
B. suggest that the development of complex gear systems, demonstrating
C. suggests that their development of complex gear systems, demonstrating
D. suggests the development of complex gear systems, their demonstration of
E. suggests that the development of complex gear systems, the demonstration of
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Are you sure that you aren't missing the highlighted word in the question stem? The sentence is a run on without the word 'that'.
In such case E is correct with all the parallelism in place.
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Researchers of the Antikythera mechanism claim the retrieval of this a 20 Apr 2018, 23:09
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Quote:
Option C uses pronoun "their" which is ambiguous as we do not know its clear antecedent. It can be either be Researchers or ancient Greek.
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Usually in everyday speech we use "their" to refer to singular subjects, but GMAT uses their to refer plural subjects
Wrong: Whenever a student calls, take down THEIR information.
Right: Whenever a student calls, take down HIS or HER information.
Right: Whenever students call, take down THEIR information.
(Reference: MGMAT Sentence Correction Guide)

So in this sentence "their" must refer to Researchers, in that case the sentence doesn't makes sense.
Quote:
"their" is a possessive noun and it must refer back to possessive noun only, logically "their" should refer to Greek but in sentence "Greek" is nowhere given, hence option C is wrong.
Show more
A possessive subject can take only a possessive pronoun but not vice versa. "Their" can also refer to a non-possessive subject.
If i come across any examples from an authentic source, then I'll post it here.
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Researchers of the Antikythera mechanism claim the retrieval of this a 21 Apr 2018, 04:34
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TaN1213

Are you sure that you aren't missing the highlighted word in the question stem? The sentence is a run on without the word 'that'.
In such case E is correct with all the parallelism in place.
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Yes I am sure. Moreover claim is not among subjunctive mode verbs which use 'that' all the times. It can be used both ways, with or without 'that'.
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Researchers of the Antikythera mechanism claim the retrieval of this a 06 May 2018, 11:38
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Parallelism case clearly

Development of, demonstration of and achievement of

Noun parallelism

E clearly states this

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Researchers of the Antikythera mechanism claim the retrieval of this a 13 Jan 2024, 12:49
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