Even the smallest amounts of chlorofluorocarbons contribute to the

Question

Even the smallest amounts of chlorofluorocarbons contribute to the needless and rapid destruction of the Earth's protective ozone layer. The destruction of the ozone layer will lead to catastrophic global warming and greatly increased incidence of skin cancer. The loss of the ozone layer is unacceptable, so chlorofluorocarbons should not be used, especially since _________.

Which of the following best completes the passage?

A. most people live in areas where the ozone layer is thickest

B. users of chlorofluorocarbons are generally unaware of the risks involved

C. most chlorofluorocarbons are used in small amounts

D. safe and equally cheap replacements are readily available

E. the ozone layer serves to protect human life in a variety of ways

This is a  CR Butler Question

Data Sufficiency Butler  
  Problem Solving Butler  
  Sentence Correction Butler  
  Reading Comprehension Butler  
  Integrated Reasoning Butler

DhruvBadaya · Answer

A. most people live in areas where the ozone layer is thickest 
This does not say anything about chlorofluorocarbons. ELIMINATED.

B. users of chlorofluorocarbons are generally unaware of the risks involved 
This does not tell us why replace CFCs. Users of chlorofluorocarbons are generally unaware of the risks involved. Okay? And? Nothing? ELIMINATED.

C. most chlorofluorocarbons are used in small amounts 
This does not tell us why replace CFCs. They are used in small quantities. Okay? And? Nothing? ELIMINATED.

D. safe and equally cheap replacements are readily available 
Cannot oppose this,

E. the ozone layer serves to protect human life in a variety of ways 
This does not say anything about chlorofluorocarbons. ELIMINATED.

D is the only option I cannot oppose and hence it must be the answer.

Angad2553 · Answer

Ans D

The loss of the ozone layer is unacceptable, so chlorofluorocarbons should not be used, especially since ___safe and equally cheap replacements are readily available

Abhishek009 · Answer

Correct answer must provide a reason sighted by the last word of the stimulus   "SINCE"

(A) If Ozone layer is thickest then use of CFC (chlorofluorocarbons) will have minimum effects.

(B) Irrelevant whether users of CFC (chlorofluorocarbons) are aware/unaware, we are looking for a answer that provides a reason why CFCs should not be used.

(C) The first line (Underlined in stimulus) states even small amounts are harmful.

(D) Provides a reason why CFCs should be discarded

(E) Cancer & skin diesease already mentioned,the options doesn't provide a reason why CFCs should be discarded.

Correct Answer must hence be (D)

Bunuel · Answer

Official Explanation

Identify the Question Type:

The blank at the end of the stimulus and the phrase  “best completes the passage”  indicate this is an Inference question. The correct answer will logically follow from the stimulus without requiring any additional information.

Untangle the Stimulus:

The stimulus describes the negative effects of chlorofluorocarbons. It concludes by saying that chlorofluorocarbons should not be used,  "especially since ____." 
Predict the Answer:

The correct answer will provide a logical reason to discontinue the use of chlorofluorocarbons that is line with what the stimulus states. Note that the stimulus already set forth the negative effects of chlorofluorocarbons. It would have been enough to conclude that chlorofluorocarbons should not be used. The word  "since"  before the blank indicates the author's looking to provide yet one more piece of evidence to avoid their use. Although it's impossible to know what that evidence will be for sure, it will provide another, new reason to not use chlorofluorocarbons.

Evaluate the Choices:

(D)  is the correct answer, because it gives an additional reason to stop using chlorofluorocarbons - one that deals with the possible objection of what would we do instead?

(A)  doesn't follow from the rest of the stimulus. Perhaps if most people live in areas where the protective ozone layer is thinnest, there would be extra urgency is stopping the use of chlorofluorocarbons. But  (A)  says the opposite.

(B)  doesn't follow logically from the stimulus. Whether users of chlorofluorocarbons are aware or unaware of the risks involved is irrelevant. The stimulus already gave the reasons to stop using chlorofluorocarbons.  (B)  doesn’t add to those reasons, and certainly doesn't deserve to come after the emphasis word,  “especially.”

(C)  does not state another reason to stop the use of chlorofluorocarbons. The stimulus already said that  “even the smallest amounts of chlorofluorocarbons”  do damage. The answer shouldn't create a redundancy in the argument.

(E)  reinforces the importance of ozone, but does not add anything new enough to merit appearing after the emphasis word,  "especially."  The stimulus already discussed some benefits to human life. The stimulus already said chlorofluorocarbons should not be used. The use of the words,  "especially since"  give the impression that something new and uniquely important is coming up.  (E)  is not the type of thing expected.

Answer: D

TAKEAWAY:  With complete the passage Inference questions, the answer will always something that completes the train of thought.

Even the smallest amounts of chlorofluorocarbons contribute to the

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Even the smallest amounts of chlorofluorocarbons contribute to the

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615 to 715 in 15 Days (Ria's Strategies)

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