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The number of mountain gorillas is declining with such rapidity that

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The number of mountain gorillas is declining with such rapidity that  [#permalink]

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New post 12 Mar 2019, 03:53
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A
B
C
D
E

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The number of mountain gorillas is declining with such rapidity that the population is one-half in the twenty years between a count made by George Schaller in 1960 and the one made by Dian Fossey in 1980.

(A) with such rapidity that the population is one-half
(B) with such rapidity that the population was one-half
(C) so rapidly the population divided in half
(D) so rapidly that the population was halved
(E) in such rapidity that the population is halved

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New post 13 Mar 2019, 01:21
Bunuel wrote:
The number of mountain gorillas is declining with such rapidity that the population is one-half in the twenty years between a count made by George Schaller in 1960 and the one made by Dian Fossey in 1980.

(A) with such rapidity that the population is one-half
(B) with such rapidity that the population was one-half
(C) so rapidly the population divided in half
(D) so rapidly that the population was halved
(E) in such rapidity that the population is halved


I had marked A , I am not really sure why D is correct
The tense used in the sentence is active and present where as the correct option D is of past tense..
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Re: The number of mountain gorillas is declining with such rapidity that  [#permalink]

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New post 13 Mar 2019, 04:16
The number of mountain gorillas is declining with such rapidity that the population is one-half in the twenty years between a count made by George Schaller in 1960 and the one made by Dian Fossey in 1980.

(A) with such rapidity that the population is one-half- use of present tense "is"-incorrect.2. use of with such rapidity to describe the verb "is declining" incorrect. It should be an adverb.
(B) with such rapidity that the population was one-half- 1.Same aprep error as A. 2."The population was one half.." wrong usage.
(C) so rapidly the population divided in half- wrong meaning
(D) so rapidly that the population was halved- correct
(E) in such rapidity that the population is halved- same prepostion error as A. 2. Use of present tense is incorrect as the action took place in the past.
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Re: The number of mountain gorillas is declining with such rapidity that  [#permalink]

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New post 27 Nov 2019, 21:21
Sol Courtesy: expertsglobal

“with such rapidity” and “in such rapidity” are unidiomatic and hence, A, B, and E are incorrect.
C wrongly suggests that the “population divided in half”. Furthermore, “that” is missing before “population”.
In D, “so rapidly…” is idiomatic through “...so + adjective/adverb + that..” structure. “was halved” implies that the population has already been halved by outside forces such as poachers, diseases, etc. Hence, D is the best choice.
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Re: The number of mountain gorillas is declining with such rapidity that   [#permalink] 27 Nov 2019, 21:21
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