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E

Recently political pressure groups have become far more effective at persuading industrial corporations to change.For example, as a result of the efforts of animal groups, many pharmaceutical and cosmetics companies have reduced their use of laboratory animanls, substituting in their place alternative methods of product testing.

the first assumption: there was no other reason to reduce use of laboratory animanls by pharmaceutical and cosmetics companies

Which of the following, if true, casts the most serious doubt on the connection between pressure group activity and corporate chage claimed above?

(A)Many comp in the pharmaceutical industry have increased their public relations spending in order to counter the activity of animal rights groups. - irrelevant.
(B)Bfore the new methods of testing products are used, they have to be caliberated by comparison tests involving experiments on laboratory animals. - irrelevant.
(C)wHEN COMP STOP USING LABORATORY ANIMALS, THEY GENERALLY GO TO SOME EXPENSE TO PUBLICIZE THIS CHANGE of policy. irrelevant. strengthen. Despite of expenses companies have reduced their use of laboratory animals.
(D)The pharmaceutical manufacturrers who still use laboratory animals are mostly the smaller firms that have been less subject to pressure group activity. - irrelevant. slightly strengthen
(E)The methods of product testing that do not involve laboratory animals are faster and cheaper that the methods that do. - ok. it is the first assumption.
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I'm going with (B) here. First, the breakdown:

PREMISE: Pol groups caused some corps to switch from animal test to new test
CONCLUSION: Pol groups are more effective in making corps change (care about animals)
ASSUMPTION: Switching tests demonstrates that the corporations actually care.

(B) weakens the assumption by showing conclusively that the corporations don't care about animals, and therefore haven't changed at all.

(E), on the other hand, does not destroy the assumption - it's possible that corporations can care about both animals AND money (let's not be too cynical here). Furthermore, if the new tests are cheaper, why didn't the corporations switch earlier? Probably because the political pressure was the catalyst, which would actually strengthen our conclusion!
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Answer is E

The question makes an assumption that the only reason pharmaceutical and cosmetic industries are using other alternative instead of laboratory animal is due to pressure.

E. This mentions that there are other reasons as well for a company to use other methods other than laboratory animals. Hence it defeats the assumption made.



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Option E mentions the alternative cause, and thus weakens the conclusion.
But even answer choice B is weakening the conclusion. Please explain why option B is wrong?
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Hi GMATNinja,

as a result of the efforts of animal groups, many pharmaceutical and cosmetics companies have reduced their use of laboratory animals, substituting in their place alternative methods of product testing.

Why are we attacking the highlighted sentence? I assumed that since this is a premise, I cannot attack this statement. I took it as a fact that efforts of animal groups indeed forced pharmaceutical and cosmetics companies to reduce their use of laboratory animals. Also, to me it doesn't look like an intermediate conclusion (there is no premise).
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Hi GMATNinja,

as a result of the efforts of animal groups, many pharmaceutical and cosmetics companies have reduced their use of laboratory animals, substituting in their place alternative methods of product testing.

Why are we attacking the highlighted sentence? I assumed that since this is a premise, I cannot attack this statement. I took it as a fact that efforts of animal groups indeed forced pharmaceutical and cosmetics companies to reduce their use of laboratory animals. Also, to me it doesn't look like an intermediate conclusion (there is no premise).
The question specifically instructs us to find an answer choice that "casts the most serious doubt on the connection between pressure group activity and corporate change claimed [in the passage]." This "claim" is found in the sentence you have highlighted, so we have no choice but to cast doubt on the information in that sentence.

I hope that answers your question!
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Hi MartyTargetTestPrep KarishmaB gmatphobia

If I say that this is cause effect reasoning and Cause is "Political pressure groups " & Effect is "reduced their use of laboratory animals"

So By option B there is a cause but there is no effect (Use of laboratory animals is not decreased). So is this not weakening by argument?
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Hi MartyTargetTestPrep KarishmaB gmatphobia

If I say that this is cause effect reasoning and Cause is "Political pressure groups " & Effect is "reduced their use of laboratory animals"

So By option B there is a cause but there is no effect (Use of laboratory animals is not decreased). So is this not weakening by argument?

It is a question based on cause-effect. We want to weaken that the cause of 'reduced use of animals' is 'political pressure groups.' So if we find another cause, we will weaken this as a cause. That is what option (E) does.

(B) Before the new methods of testing products are used, they have to be calibrated by comparison tests involving experiments on laboratory animals.

The use of animals will be reduced a whole lot here. Before we start using an instrument, we need to calibrate it but this we need to do once only. So the new methods would need to calibrated using animal testing but that will happen only once in the beginning. After that only the new methods will be used so no animals will be used thereafter. Hence the use of lab animals will be much reduced.
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Hi KarishmaB DmitryFarber MartyMurray

Kindly can you help me with the structure of the arguement ? is the part starting with 'For eg... product testing' is an intermediate conclusion supporting the main claim given in the 1st statement ? and Intermediate conclusion's reasoning is flawed (stated cause is not causing the effect), weakening the main claim or connection b/w Pressure Groups and Corporates.

Am I correct in my Thinking, Kindly can you confirm ?

Thanks !
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Hi KarishmaB DmitryFarber MartyMurray

Kindly can you help me with the structure of the arguement ? is the part starting with 'For eg... product testing' is an intermediate conclusion supporting the main claim given in the 1st statement ? and Intermediate conclusion's reasoning is flawed (stated cause is not causing the effect), weakening the main claim or connection b/w Pressure Groups and Corporates.

Am I correct in my Thinking, Kindly can you confirm ?

Thanks !
 

Yes, in a way. He gives his example to support his conclusion but that is also not a fact.

For example, as a result of the efforts of animal groups, many pharmaceutical and cosmetics companies have reduced their use of laboratory animals, substituting in their place alternative methods of product testing.

We don't know that this change happened "as a result" of efforts of animal groups. We get to know that the change happened, but "it happened as a result of the efforts of animal groups" is the author's claim. But this is something we realise once we read option (E). 
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