Last visit was: 17 May 2024, 20:41 It is currently 17 May 2024, 20:41
Close
GMAT Club Daily Prep
Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Close
Request Expert Reply
Confirm Cancel
SORT BY:
Date
Tags:
Show Tags
Hide Tags
Math Expert
Joined: 02 Sep 2009
Posts: 93334
Own Kudos [?]: 624552 [6]
Given Kudos: 81898
Send PM
Manager
Manager
Joined: 13 Sep 2020
Posts: 72
Own Kudos [?]: 73 [1]
Given Kudos: 156
Location: India
Concentration: General Management, Strategy
GMAT Focus 1:
575 Q79 V79 DI77
GMAT 1: 460 Q36 V18 (Online)
GPA: 3.8
Send PM
User avatar
Intern
Intern
Joined: 05 Jan 2023
Posts: 2
Own Kudos [?]: 2 [2]
Given Kudos: 1
Send PM
Director
Director
Joined: 29 Oct 2015
Posts: 715
Own Kudos [?]: 328 [2]
Given Kudos: 463
Send PM
Re: Carbon pollution from the burning of fossil fuels has contributed to [#permalink]
2
Kudos
C should be the answer.
We can't determine the amount of carbon released simply from the fossil fuels.
Because fossil fuels are not the only source.
Carbons are getting released from the permafrost also.
So C is the answer.

Posted from my mobile device
Intern
Intern
Joined: 23 Mar 2024
Posts: 3
Own Kudos [?]: 1 [1]
Given Kudos: 7
Location: India
Send PM
Re: Carbon pollution from the burning of fossil fuels has contributed to [#permalink]
1
Kudos
C could also be an answer as there is a clear mention: "that are now being spread into the atmosphere by bacteria as the permafrost melts."
Kindly help me with the answer
Math Expert
Joined: 02 Sep 2009
Posts: 93334
Own Kudos [?]: 624552 [0]
Given Kudos: 81898
Send PM
Re: Carbon pollution from the burning of fossil fuels has contributed to [#permalink]
Expert Reply
Bunuel wrote:
­Carbon pollution from the burning of fossil fuels has contributed to the warming of the planet, which has melted ice in the Arctic Circle and unearthed caves and waterways that were previously inaccessible due to ice. Scientists researching these areas have found stores of carbon that had been trapped in the permafrost of these caves, and that are now being spread into the atmosphere by bacteria as the permafrost melts.

Which of the following can best be concluded by the information above?

A. The rate at which carbon is being released into the atmosphere is increasing.

B. Previously frozen carbon from permafrost will someday pose more of a threat to the environment than the carbon released from the burning of fossil fuels.

C. The amount of carbon being released into the atmosphere cannot be determined simply by calculating the amount of fossil fuel being burned.

D. The amount of carbon released into the atmosphere will increase until humans stop burning fossil fuels.

E. The amount of carbon released into the atmosphere from melting permafrost is about equal to the amount released from the burning of fossil fuels.​


­
This is a CR Butler Question

    Check the links to other Butler Projects:
 
­

­

Veritas Prep Official Explanation



With Inference questions, the correct answer must meet the "must be true" standard, which means that you should attack each answer choice via process-of-elimination. Also note that when you have prior knowledge of the subject matter of a question and/or when you have a strong opinion about a topic (as many do with topics such as the environment), you must take care to avoid "mental inertia" - you can only decide on an answer choice based on what is explicitly given in the stimulus.

With choice A, pay attention to the specific wording that the "rate at which carbon is being released" is increasing (NOT "the amount of carbon is increasing"). While it might seem likely that the addition of a new source of carbon would increase the rate, you cannot prove this from the information given (what if a combination of more fuel-efficient vehicles and fewer people driving has dramatically cut down auto emissions by more than the newly unfrozen carbon is being released?).

With choice B, you can use similar logic: you just don't know how much carbon is in the permafrost (at least not from the stimulus) and you cannot rule out a massive surge in the burning of fossil fuels. (Also note - predictions far into the future are really hard to prove. What if an asteroid blows the whole planet up next week? Even if the trend were heading in this direction, that would render the prediction untrue!)

Choice C is correct: the stimulus proves that now there is (at least) a second source of carbon emissions, so calculating the amount from just one of those sources will not give an accurate statistic.

Choice D doesn't have to be true (what if someone invents a "carbon vacuum" to clean the air?). And choice E is also incorrect - you know now that there are two sources of carbon, but do not have nearly enough information to declare that the two sources are equal in the amount of carbon they release.­
GMAT Club Bot
Re: Carbon pollution from the burning of fossil fuels has contributed to [#permalink]
Moderators:
GMAT Club Verbal Expert
6929 posts
GMAT Club Verbal Expert
238 posts
CR Forum Moderator
832 posts