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# The majority of scientists believe that to reduce and stabilize atmosp

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Intern
Joined: 16 Sep 2007
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The majority of scientists believe that to reduce and stabilize atmosp  [#permalink]

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Updated on: 18 Feb 2019, 10:55
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Question Stats:

87% (01:19) correct 13% (01:26) wrong based on 278 sessions

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The majority of scientists believe that to reduce and stabilize atmospheric concentrations of carbon dioxide, emissions must be cut at the source by fossil fuels that are burned more efficiently and, in some cases, by alternatives such as hydrogen fuel cells that can replace fossil fuels altogether.

(A) fossil fuels that are burned more efficiently and, in some cases, by alternatives such as hydrogen fuel cells that can replace fossil fuels altogether

(B) fossil fuels that are burned more efficiently and, in some cases, those that are replaced altogether with alternatives such as hydrogen fuel cells

(C) burning fossil fuels more efficiently and, in some cases, by replacing fossil fuels altogether with alternatives such as hydrogen fuel cells

(D) more efficiency in the burning of fossil fuels and, in some cases, by alternatives such as hydrogen fuel cells that can replace fossil fuels altogether

(E) the more efficient burning of fossil fuels and, in some cases, by fossil fuels that are replaced altogether with alternatives such as hydrogen fuel cells

Originally posted by kaijen on 27 Sep 2007, 20:06.
Last edited by Bunuel on 18 Feb 2019, 10:55, edited 1 time in total.
Renamed the topic and edited the question.
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Re: The majority of scientists believe that to reduce and stabilize atmosp  [#permalink]

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27 Sep 2007, 20:07
I think (A) is better because there are some errors in (C).

emissions must be cut at the source by burning fossil fuels more efficiently and, in some cases, by replacing fossil fuels altogether with alternatives such as hydrogen fuel cells

Can emissions perform these two actions?
If the subject is something like people, the above sentence makes sense; otherwise, it is dangling.

Ans: (C)
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Re: The majority of scientists believe that to reduce and stabilize atmosp  [#permalink]

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27 Sep 2007, 20:24
kaijen wrote:
Test2-64.

The majority of scientists believe that to reduce and stabilize atmospheric concentrations of carbon dioxide, emissions must be cut at the source by fossil fuels that are burned more efficiently and, in some cases, by alternatives such as hydrogen fuel cells that can replace fossil fuels altogether.

(A) fossil fuels that are burned more efficiently and, in some cases, by alternatives such as hydrogen fuel cells that can replace fossil fuels altogether
(B) fossil fuels that are burned more efficiently and, in some cases, those that are replaced altogether with alternatives such as hydrogen fuel cells
(C) burning fossil fuels more efficiently and, in some cases, by replacing fossil fuels altogether with alternatives such as hydrogen fuel cells
(D) more efficiency in the burning of fossil fuels and, in some cases, by alternatives such as hydrogen fuel cells that can replace fossil fuels altogether
(E) the more efficient burning of fossil fuels and, in some cases, by fossil fuels that are replaced altogether with alternatives such as hydrogen fuel cells

The sentence has 2 corrections;

1. the clauses that are parallel do not agree on the verb form:
"burned" and "can replace" are not parallel.

2. the modified parts of the two sentence fragments are not well formed.

C - corrects this using "ing" form of the verb and placing the modified fragments in context i.e "burning fossil fuels" and "replacing fossil fuels"
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Re: The majority of scientists believe that to reduce and stabilize atmosp  [#permalink]

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27 Sep 2007, 20:34
(C) has better parallelism: "by burning fossil fuels" and "by replacing fossil fuels"

And so I think C is better.
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Re: The majority of scientists believe that to reduce and stabilize atmosp  [#permalink]

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27 Sep 2007, 21:20
I picked C because the word before the underlined portion is "by", which is a preposition and should be followed by a noun or object. That eliminates D & E, and A and B do not follow the rules on parallelism which leaves us with C.
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Re: The majority of scientists believe that to reduce and stabilize atmosp  [#permalink]

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27 Sep 2007, 22:23
C for best ||ism.

"BY burnING fossil fuels more efficiently and, in some cases, BY replacING fossil fuels"
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Re: The majority of scientists believe that to reduce and stabilize atmosp  [#permalink]

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05 Sep 2017, 20:40
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This sentence needs a common construction: ‘by + verb-ing’. 'By' is used when you describe the method used to accomplish (HOW) something - exactly what is done in this sentence. The sentence is explaining how the states are going to accomplish the stated goal.

If we say:

You should study daily. By doing so, you will improve consistently.

Or

One can’t become smarter by facing the same challenges every day.

A and B are wrong because emissions can’t be cut by fossil fuels … rather they can be cut by more efficient burning of fossil fuels.

D is not parallel; ‘by more efficiency’ is not parallel to ‘alternatives (fuels)’.

E is not parallel; ‘the more efficient burning’ is not parallel to ‘fossil fuels’.

C is perfectly parallel … by burning || by replacing.

C: correct.
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Re: The majority of scientists believe that to reduce and stabilize atmosp  [#permalink]

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18 Dec 2017, 06:17
anairamitch1804 wrote:
This sentence needs a common construction: ‘by + verb-ing’. 'By' is used when you describe the method used to accomplish (HOW) something - exactly what is done in this sentence. The sentence is explaining how the states are going to accomplish the stated goal.

If we say:

You should study daily. By doing so, you will improve consistently.

Or

One can’t become smarter by facing the same challenges every day.

A and B are wrong because emissions can’t be cut by fossil fuels … rather they can be cut by more efficient burning of fossil fuels.

D is not parallel; ‘by more efficiency’ is not parallel to ‘alternatives (fuels)’.

E is not parallel; ‘the more efficient burning’ is not parallel to ‘fossil fuels’.

C is perfectly parallel … by burning || by replacing.

C: correct.

Excellent explanation. Thanks
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Re: The majority of scientists believe that to reduce and stabilize atmosp  [#permalink]

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18 Feb 2019, 08:09
Re: The majority of scientists believe that to reduce and stabilize atmosp   [#permalink] 18 Feb 2019, 08:09
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# The majority of scientists believe that to reduce and stabilize atmosp

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