IMO B.

'But' is needed to present the contrast, for eg 'x' is not a new principle but an old one .

The proposed urban development zones are not a new principle, but one that was employed in “Operation Bootstrap” in Puerto Rico.

The correct idiom, x is not y but z

but then how wrong is C?...i mn it does make sense to me as after the semicolon, the clause makes complete sense....

@ Shipra u rite in saying that the clause after the semicolon can stand independently but then sometimes we need to get thinking bout the logic of the question, as in the purpose of the sentence. Here the purpose is contrast

In C,

The proposed urban development zones do not represent a new principle. The same one was employed in “Operation Bootstrap” in Puerto Rico.

Look at the bold part, 'same one' to write like this would have been good, had the first part of the sentence explained the principle. Also I feel instead of using 'same one' using 'same principle' would make it somewhat an easier digestion

Others please pitch in with ur explanations

The proposed urban development zones do not represent a new principle; it was employed in “Operation Bootstrap” in Puerto Rico.
(A) do not represent a new principle; it
(B) represent not a new principle, but one that
(C) are not a new principle; the same one
(D) are not a new principle, but one that
(E) are not new in principle; it

'The proposed urban development zones' aren't a principle themselves rather they represent a principle.So eliminate C,D & E. In A 'it' is wrong.It should have been 'they'.Nothing wrong with B.

i dont think we require a "but" here.
we require "but" in cases such as -
"AIIMS, in Delhi, is one of the best hospitals in India but it lacks adequate supply of clean water to all the patients".

in the main question above, the first half clearly says that PUDZ do not represent a new principle - means it represent an old principle.
there is nothing called "semi-new" or "semi-old" principle.
hence we donot require a "but" here.

Also PUDZ is considered as a single group - hence can take singular pronoun "it".

hence IMO A.


Thanks!

loki.gmat wrote:i dont think we require a "but" here.
we require "but" in cases such as -
"AIIMS, in Delhi, is one of the best hospitals in India but it lacks adequate supply of clean water to all the patients".

in the main question above, the first half clearly says that PUDZ do not represent a new principle - means it represent an old principle.
there is nothing called "semi-new" or "semi-old" principle.
hence we donot require a "but" here.

Also PUDZ is considered as a single group - hence can take singular pronoun "it".

hence IMO A.


Thanks!

'It' should not refer to PUDZ rather 'it' should refer to the principle used in PUDZ. Thus A seems bit ambiguous whether it was PUDZ or the priniciple that was employed in “Operation Bootstrap”.

IMO B.

IMO, the answer is (A), my reasons are :-

(C), (D) & (E) need to be elimated as 'Zones' in themselves are not a principle.

(B) - Wordy. 'But' is NOT required to explain a hypothesis made, 'but' is usually required
to contrast an already made hypothesis

(A) - Neat. 'It' is correct as it qualifies the 'principle' (which is singular) & not the Zones (plural)