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Most efforts to combat such mosquito-borne like malaria and dengue...

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Intern
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Joined: 26 Apr 2019
Posts: 3
Most efforts to combat such mosquito-borne like malaria and dengue...  [#permalink]

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New post 21 Jul 2019, 14:52
00:00
A
B
C
D
E

Difficulty:

  15% (low)

Question Stats:

86% (01:02) correct 14% (01:53) wrong based on 28 sessions

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Most efforts to combat such mosquito-borne diseases like malaria and dengue have focused either on the vaccination of humans or on exterminating mosquitoes with pesticides.

A) like malaria and dengue have focused either on the vaccination of humans or on exterminating
B) like malaria and dengue have focused either on vaccinating of humans or on the extermination of
C) as malaria and dengue have focused on either vaccinating humans or on exterminating
D) as malaria and dengue have focused on either vaccinating of humans or on extermination of
E) as malaria and dengue have focused on either vaccinating humans or exterminating

QUESTION: I don’t understand why it the alternative C is wrong.
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Re: Most efforts to combat such mosquito-borne like malaria and dengue...  [#permalink]

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New post 21 Jul 2019, 20:04
Hi,
C is wrong because it changes the meaning of the sentence. It implies that most efforts have focussed exclusively on either of the options.

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Re: Most efforts to combat such mosquito-borne like malaria and dengue...  [#permalink]

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New post 21 Jul 2019, 20:50
laisborges wrote:
Most efforts to combat such mosquito-borne diseases like malaria and dengue have focused either on the vaccination of humans or on exterminating mosquitoes with pesticides.

A) like malaria and dengue have focused either on the vaccination of humans or on exterminating
B) like malaria and dengue have focused either on vaccinating of humans or on the extermination of
C) as malaria and dengue have focused on either vaccinating humans or on exterminating
D) as malaria and dengue have focused on either vaccinating of humans or on extermination of
E) as malaria and dengue have focused on either vaccinating humans or exterminating

QUESTION: I don’t understand why it the alternative C is wrong.


hi
laisborges ..this will help you understand why answer choice C is wrong

placement of the preposition and the correlative conjunctions

(1) either on …. or … (once inside = incorrect)

(2) either on …. or on … (twice inside = correct)

(3) on either …. or on … (once outside, once inside = incorrect)

(4) on either …. or … (once outside = correct)
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Re: Most efforts to combat such mosquito-borne like malaria and dengue...  [#permalink]

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New post 21 Jul 2019, 21:24
laisborges wrote:
Most efforts to combat such mosquito-borne diseases like malaria and dengue have focused either on the vaccination of humans or on exterminating mosquitoes with pesticides.

A) like malaria and dengue have focused either on the vaccination of humans or on exterminating
B) like malaria and dengue have focused either on vaccinating of humans or on the extermination of
C) as malaria and dengue have focused on either vaccinating humans or on exterminating
D) as malaria and dengue have focused on either vaccinating of humans or on extermination of
E) as malaria and dengue have focused on either vaccinating humans or exterminating

QUESTION: I don’t understand why it the alternative C is wrong.


Discussed here: https://gmatclub.com/forum/most-efforts ... fl=similar

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Re: Most efforts to combat such mosquito-borne like malaria and dengue...   [#permalink] 21 Jul 2019, 21:24
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Most efforts to combat such mosquito-borne like malaria and dengue...

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