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Covering almost 40% of the South American continent, the Amazonian

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Covering almost 40% of the South American continent, the Amazonian  [#permalink]

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New post 30 Sep 2018, 07:17
1
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A
B
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D
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  45% (medium)

Question Stats:

62% (01:38) correct 38% (01:45) wrong based on 200 sessions

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Covering almost 40% of the South American continent, the Amazonian Rainforests are vital for all the countries in the region, helping stabilize their climate, maintaining their water cycle and protecting them from flood, drought and erosion, acting as a source of medicine and food.

(A) helping stabilize their climate, maintaining their water cycle and protecting them from flood, drought and erosion, acting as a source of medicine and food
(B) helping stabilize their climate, maintaining their water cycle, protecting them from flood, drought and erosion, and acting as a source of medicine and food
(C) helping stabilize their climate, maintaining their water cycle and protecting them from flood, drought, erosion, and acting as a source of medicine and of food
(D) by stabilizing their climate, maintaining their water cycle and protecting them from flood, drought and erosion, as well as by acting as a source of medicine and food
(E) by stabilizing their climate, maintaining their water cycle and protecting them from flood, drought and from erosion, and as a source of medicine and food

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Covering almost 40% of the South American continent, the Amazonian  [#permalink]

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New post 30 Sep 2018, 07:23
Harshgmat wrote:
Covering almost 40% of the South American continent, the Amazonian Rainforests are vital for all the countries in the region, helping stabilize their climate, maintaining their water cycle and protecting them from flood, drought and erosion, acting as a source of medicine and food.

(A) helping stabilize their climate, maintaining their water cycle and protecting them from flood, drought and erosion, acting as a source of medicine and food
(B) helping stabilize their climate, maintaining their water cycle, protecting them from flood, drought and erosion, and acting as a source of medicine and food
(C) helping stabilize their climate, maintaining their water cycle and protecting them from flood, drought, erosion, and acting as a source of medicine and of food
(D) by stabilizing their climate, maintaining their water cycle and protecting them from flood, drought and erosion, as well as by acting as a source of medicine and food
(E) by stabilizing their climate, maintaining their water cycle and protecting them from flood, drought and from erosion, and as a source of medicine and food


+1 for B

Two lists here:
(1) Helping, maintaining, protecting and acting
(2) flood, drought and erosion

Parallelism is maintained only in B. All other options make an error by using 'and' before protecting.
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Re: Covering almost 40% of the South American continent, the Amazonian  [#permalink]

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New post 30 Sep 2018, 07:28
IMO B
List is parallel and verb-ing after comma rightly tells more about the preceding clause( the Amazonian Rainforests are vital for all the countries in the region).

Hope it helps.
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Re: Covering almost 40% of the South American continent, the Amazonian  [#permalink]

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New post 18 Apr 2019, 11:06
Covering almost 40% of the South American continent, the Amazonian Rainforests are vital for all the countries in the region, helping stabilize their climate, maintaining their water cycle and protecting them from flood, drought and erosion, acting as a source of medicine and food.

(A) helping stabilize their climate, maintaining their water cycle and protecting them from flood, drought and erosion, acting as a source of medicine and food
(B) helping stabilize their climate, maintaining their water cycle, protecting them from flood, drought and erosion, and acting as a source of medicine and food
(C) helping stabilize their climate, maintaining their water cycle and protecting them from flood, drought, erosion, and acting as a source of medicine and of food
(D) by stabilizing their climate, maintaining their water cycle and protecting them from flood, drought and erosion, as well as by acting as a source of medicine and food
(E) by stabilizing their climate, maintaining their water cycle and protecting them from flood, drought and from erosion, and as a source of medicine and food
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Re: Covering almost 40% of the South American continent, the Amazonian  [#permalink]

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New post 14 May 2019, 20:24
why is option D wrong?
it has this structure -'by...... as well as by ....'
I thought this is acceptable.
Please let me know if I am missing something.
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Covering almost 40% of the South American continent, the Amazonian  [#permalink]

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New post 14 May 2019, 22:35
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Adipi123 wrote:
why is option D wrong?
it has this structure -'by...... as well as by ....'
I thought this is acceptable.
Please let me know if I am missing something.


Other than the grammatical errors, choice D has a meaning error.

"Amazonian rain forests are vital by stabilizing their climate" does not make sense.
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Covering almost 40% of the South American continent, the Amazonian   [#permalink] 14 May 2019, 22:35
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