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06 Aug 2019, 10:15
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B
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Difficulty:
75%
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Question Stats:
41% (01:17) correct
59%
(01:29)
wrong
based on 1116
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The fact that “dark matter” accounts for over 95 percent of the matter in the universe has been established through analysis of gravity’s effect on light from distant objects, but what is more difficult to determine are the origin, composition, and properties of dark matter.
(A) has been established through analysis of gravity’s effect on light from distant objects, but what is more difficult to determine are
(B) has been established through analysis of gravity’s effect on light from distant objects, but what is more difficult to determine is
(C) has been established through analysis of gravity’s effect on light from distant objects, but what are more difficult to determine are
(D) have been established through analysis of gravity’s effect on light from distant objects, but what is more difficult to determine are
(E) have been established through analysis of gravity’s effect on light from distant objects, but what are more difficult to determine are
(A) has been established through analysis of gravity’s effect on light from distant objects, but what is more difficult to determine are
(B) has been established through analysis of gravity’s effect on light from distant objects, but what is more difficult to determine is
(C) has been established through analysis of gravity’s effect on light from distant objects, but what are more difficult to determine are
(D) have been established through analysis of gravity’s effect on light from distant objects, but what is more difficult to determine are
(E) have been established through analysis of gravity’s effect on light from distant objects, but what are more difficult to determine are
07 Aug 2019, 09:55
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gvij2017
hello gvij2017
I had the same concern when I faced this question, and made a lot of search in the internet and in GC, and came to the conclusion below:
Conclusion: Whenever (noun) clause acts as a subject of the sentence it is always SINGULAR in GMAT irrespective of weather the verb refers to a singular/plural noun.
Your above considerations is correct form general grammar standpoint as Mr. Mike said, but seems here in GMAT it is a little bit straight forward.
Please refer to this thread maybe you find answered that you are searching for https://gmatclub.com/forum/the-period-w ... ml#p727032
EducationAisle
and some more examples form EducationAisle
What one learns from mistakes (is/are) resilience, will power and courage.
What is very clear from recent debacle of the party in the elections (is/are) lack of leadership, absence of political vision, and discontent among voters.
What statements politicians give (is/are) important.
How many superstitions there are (don’t/doesn't) matter.
That a causal relationship exists between health and labor productivity (has been/have been) concluded by several empirical studies.
hope it will be helpful somehow
The fact that “dark matter” accounts for over 95 percent of the matter in the universe has been established through analysis of gravity’s effect on light from distant objects, but what is more difficult to determine are the origin, composition, and properties of dark matter.
Meaning:
1. The fact (that “dark matter” accounts for over 95 percent of the matter in the universe) has been established
2. established through analysis of gravity’s effect on light from distant objects
3. but what is more difficult to determine
4. the origin, composition, and properties of dark matter - are difficult to determine
Errors:
A.PNG [ 69.88 KiB | Viewed 9946 times ]
Generally this question tests SV agreement and Verb tenses.
Let's discuss all SV pairs one by one.
1. SV - the fact-has been established - agrees in number
usage of present perfect here is absolutely correct, because we don't know exact time of this establishment, and present perfect presents this fact as a result.
2. SV - that-accounts-that refers to 'dark matter'- both singular - agrees in number
present simple used correctly to show generals facts about dark matter
3. SV - what-is-what is a placeholder here, and most probably this relative pronoun refers to each items of the list separately and because of the first item of the list is singular, what should be singular, we can consider 'what' here as singular - agrees in number.
4. SV - what is more difficult to determine-are, subject here is - what is more difficult to determine, so clauses as a subject are always singular, hence, we have SV agreement error.
POE
(A) has been established through analysis of gravity’s effect on light from distant objects, but what is more difficult to determine are
(B) has been established through analysis of gravity’s effect on light from distant objects, but what is more difficult to determine is
(C) has been established through analysis of gravity’s effect on light from distant objects, but what are more difficult to determine are
(D) have been established through analysis of gravity’s effect on light from distant objects, but what is more difficult to determine are
(E) have been established through analysis of gravity’s effect on light from distant objects, but what are more difficult to determine are
B.PNG [ 88.17 KiB | Viewed 9848 times ]
B is the answer.
Meaning:
1. The fact (that “dark matter” accounts for over 95 percent of the matter in the universe) has been established
2. established through analysis of gravity’s effect on light from distant objects
3. but what is more difficult to determine
4. the origin, composition, and properties of dark matter - are difficult to determine
Errors:
Attachment:
A.PNG [ 69.88 KiB | Viewed 9946 times ]
Generally this question tests SV agreement and Verb tenses.
Let's discuss all SV pairs one by one.
1. SV - the fact-has been established - agrees in number
usage of present perfect here is absolutely correct, because we don't know exact time of this establishment, and present perfect presents this fact as a result.
2. SV - that-accounts-that refers to 'dark matter'- both singular - agrees in number
present simple used correctly to show generals facts about dark matter
3. SV - what-is-what is a placeholder here, and most probably this relative pronoun refers to each items of the list separately and because of the first item of the list is singular, what should be singular, we can consider 'what' here as singular - agrees in number.
4. SV - what is more difficult to determine-are, subject here is - what is more difficult to determine, so clauses as a subject are always singular, hence, we have SV agreement error.
POE
(B) has been established through analysis of gravity’s effect on light from distant objects, but what is more difficult to determine is
(E) have been established through analysis of gravity’s effect on light from distant objects, but what are more difficult to determine are
Attachment:
B.PNG [ 88.17 KiB | Viewed 9848 times ]
B is the answer.
Attachments
dark_matter_topic_1024.jpg [ 70.04 KiB | Viewed 10283 times ]
