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# The period when the great painted caves at Lascaux and Altamira were o

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Manager
Joined: 17 Aug 2015
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Kudos [?]: 20 [0], given: 653

GMAT 1: 650 Q49 V29
Re: The period when the great painted caves at Lascaux and Altamira were o [#permalink]

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21 Mar 2017, 18:49
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The period when the great painted caves at Lascaux and Altamira were occupied by Upper Paleolithic people has been established by carbon-14 dating，but what is much more difficult to determine are the reason for their decoration，the use to which primitive people put the caves，and the meaning of the magnificently depicted animals．

first sentence the subject is - period- verb has is correct

second clause starting with but- subject is - what is much more difficult to determine- the entire phrase so verb are is wrong as phrase is always singular

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Manager
Joined: 07 Aug 2016
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Location: India
Concentration: Marketing, Operations
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WE: Engineering (Telecommunications)
Re: The period when the great painted caves at Lascaux and Altamira were o [#permalink]

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26 Apr 2017, 04:35
1. "What is much more to determine" is the subject and not "reason" as posted by many users and hence "is" must be used.
2.If the construction was more like ...The period .. has been established by carbon-14 dating，but more difficult to determine are the reason for their decoration，the use .....
"are" is used since now this is backward construction and the subject is compound subject i.e "the reason for their decoration，the use to which primitive people put the caves，and the meaning of the magnificently depicted animals．"

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Manager
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Re: The period when the great painted caves at Lascaux and Altamira were o [#permalink]

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09 Jun 2017, 00:35
(A) has been established by carbon-14 dating，but what is much more difficult to determine are
(B) has been established by carbon-14 dating，but what is much more difficult to determine is
(C) have been established by carbon-14 dating，but what is much more difficult to determine is
(D) have been established by carbon-14 dating，but what is much more difficult to determine are
(E) are established by carbon-14 dating，but that which is much more difficult to determine is
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Senior Manager
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Re: The period when the great painted caves at Lascaux and Altamira were o [#permalink]

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19 Jul 2017, 12:25
Ignore the fluff!

The period when the great painted caves at Lascaux and Altamira were occupied by Upper Paleolithic people has been established by carbon-14 dating, but what is much more difficult to determine are the reason for their decoration, the use to which primitive people put the caves, and the meaning of the magnificently depicted animals.

Right off the bat, notice the ending 'determine are the reason'. The correct usage must be singluar, i.e 'is'. Hence eliminate A and D

Both C and E make the same error of using plural form to denote 'period'. It cannot be 'have' or 'are'.. Answer choice E also has a flaw with the dependent clause 'but that which is much more difficult to determine is'

This leaves us with B as the correct answer
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Re: The period when the great painted caves at Lascaux and Altamira were o [#permalink]

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10 Sep 2017, 04:50
daagh wrote:
Essentially this passage has two clauses and two subjects 1. The periodand 2 the reason. Both are singluar. Hence the period entails the singular - has– and the reason entails – is- . B is the only choice that befits this norm.

what i feel is the reason is not the subject of later part,
rather what is much more difficult to determine is the subject.
and after is/are is a list x,y,and z format
and list should be considered as one piece.
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Re: The period when the great painted caves at Lascaux and Altamira were o   [#permalink] 10 Sep 2017, 04:50

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