knewton problem-can anybody explain

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sorry i dont know why link is not working . i have posted the question. i dont hv the oa/OE

https://gmatmania.com/Gmattopic_Detail.aspx?topicid=13


knewton

The exact year when the Mogao caves in Dunhuang, China began to be sculpted and chiseled by the Northern Wei Dynasty has been difficult to verify, but what is much easier to determine are the purpose of their existence, the religious significance that the drawings on the walls of the caves held, and the order in which the caves were constructed.



(A) has been difficult to verify, but what is much easier to determine are
(B) has been difficult to verify, but what is much easier to determine is

(C) have been difficult to verify, but what is much easier to determine is
(D) have been difficult to verify, but what is much easier to determine are
(E) are difficult to verify, but that which is much easier to determine is
Last edited by pradeepkaushal9518 on Fri May 24, 2013 7:13 pm, edited 2 times in total.
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Source: — Sentence Correction |

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by Jim@StratusPrep » Wed May 22, 2013 5:30 am
The link is broken...
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by pradeepkaushal9518 » Thu May 23, 2013 6:57 pm
sir full question posted
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by neer.king » Fri May 24, 2013 12:28 am
The exact year when the Mogao caves in Dunhuang, China began to be sculpted and chiseled by the Northern Wei Dynasty has been difficult to verify, but what is much easier to determine are the purpose of their existence, the religious significance that the drawings on the walls of the caves held, and the order in which the caves were constructed.

(A) has been difficult to verify, but what is much easier to determine are
(B) has been difficult to verify, but what is much easier to determine is

(C) have been difficult to verify, but what is much easier to determine is
(D) have been difficult to verify, but what is much easier to determine are
(E) are difficult to verify, but that which is much easier to determine is


IMO: B ( but in question the underlined and should be or)
In C, D, E year is singular so it cannot be have or are

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by faraz_jeddah » Tue May 28, 2013 5:40 am
pradeepkaushal9518 wrote:sorry i dont know why link is not working . i have posted the question. i dont hv the oa/OE

https://gmatmania.com/Gmattopic_Detail.aspx?topicid=13


knewton

The exact year when the Mogao caves in Dunhuang, China began to be sculpted and chiseled by the Northern Wei Dynasty has been difficult to verify, but what is much easier to determine are the purpose of their existence, the religious significance that the drawings on the walls of the caves held, and the order in which the caves were constructed.



(A) has been difficult to verify, but what is much easier to determine are
(B) has been difficult to verify, but what is much easier to determine is

(C) have been difficult to verify, but what is much easier to determine is
(D) have been difficult to verify, but what is much easier to determine are
(E) are difficult to verify, but that which is much easier to determine is
The answer should be A

The year (singular) --> has

What is easier to determine? - the purpose, the religious significane and the order (plural) are

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by pradeepkaushal9518 » Wed May 29, 2013 8:09 pm
let us wait for experts reply
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by rohanberi » Thu May 30, 2013 9:56 am
Hi Pradeep,

Found the same post posted by you some 3 years back, and that too along with the expert comments.. :)
Just FYR ..

https://www.beatthegmat.com/knewton-vr-4-t66917.html

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by pradeepkaushal9518 » Fri May 31, 2013 5:27 am
good actually that time i was having knewton online course i have the question saved but didnt have the answers.
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