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# A newly discovered disease is thought to be caused by a

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Re: CR strengthen question [#permalink]

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18 Nov 2010, 23:53
Got it right!
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Re: A newly discovered disease is thought to be caused by a [#permalink]

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26 May 2014, 11:03
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Re: A newly discovered disease is thought to be caused by a [#permalink]

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16 May 2016, 13:48
VeritasPrepKarishma wrote:
poohv005 wrote:
A newly discovered disease is thought to be caused by a certain bacterium. However, recently released data notes that the bacterium thrives(prosper) in the presence of a certain virus, implying that it is actually the virus that causes the new disease.
Which of the following pieces of evidence would most support the data’s implication?
(A) In the absence of the virus, the disease has been observed to follow infection by the bacterium.
(B) The virus has been shown to aid the growth of bacterium, a process which often leads to the onset of the disease.
(C) The virus alone has been observed in many cases of the disease.
(D) In cases where the disease does not develop, infection by the bacterium is usually preceded by infection by the virus.
(E) Onset of the disease usually follows infection by both the virus and the bacterium.

please explain the answer.

Let's focus on the question first because that is all that is relevant to us. (In fact, it helps to read the question first so that you can read the argument with the question in perspective)
Which of the following pieces of evidence would most support the data’s implication?

Now, before we move on, what is data's implication?
implying that it is actually the virus that causes the new disease.

Now you have to pick an answer choice which best supports 'it is actually the virus that causes the disease'. Focus on that.

Option (C) clearly states that the virus alone has been found in many cases. Then it must be the virus that causes the disease.
It does not conflict with the premise above - 'A newly discovered disease is thought to be caused by a certain bacterium.' The premise does not say that it is caused by the bacterium. It only says that it is thought to be caused by the bacterium.

Option (B) doesn't strengthen that it is actually the virus that causes the disease. It says that the virus aids the growth of bacterium and this growth leads to development of the disease. The cause of the disease is still the bacterium. That is, if the bacterium weren't present, the virus probably couldn't do anything alone. (Note the probably here. This statement doesn't say that the virus alone cannot do anything but it also doesn't say that the virus alone can cause the disease) But we want to strengthen that it is actually the virus which is the cause.

Hi, the data's implication is indeed "it's the virus that CAUSES the new disease", but no where in option C it mentions that virus is the CAUSE, it just mentions that the virus has been found in many cases.

I rejected the option on these grounds, do tell me where I went wrong.

Regards
RT
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Re: A newly discovered disease is thought to be caused by a [#permalink]

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17 May 2016, 00:38
rohitt911 wrote:
VeritasPrepKarishma wrote:
poohv005 wrote:
A newly discovered disease is thought to be caused by a certain bacterium. However, recently released data notes that the bacterium thrives(prosper) in the presence of a certain virus, implying that it is actually the virus that causes the new disease.
Which of the following pieces of evidence would most support the data’s implication?
(A) In the absence of the virus, the disease has been observed to follow infection by the bacterium.
(B) The virus has been shown to aid the growth of bacterium, a process which often leads to the onset of the disease.
(C) The virus alone has been observed in many cases of the disease.
(D) In cases where the disease does not develop, infection by the bacterium is usually preceded by infection by the virus.
(E) Onset of the disease usually follows infection by both the virus and the bacterium.

please explain the answer.

Let's focus on the question first because that is all that is relevant to us. (In fact, it helps to read the question first so that you can read the argument with the question in perspective)
Which of the following pieces of evidence would most support the data’s implication?

Now, before we move on, what is data's implication?
implying that it is actually the virus that causes the new disease.

Now you have to pick an answer choice which best supports 'it is actually the virus that causes the disease'. Focus on that.

Option (C) clearly states that the virus alone has been found in many cases. Then it must be the virus that causes the disease.
It does not conflict with the premise above - 'A newly discovered disease is thought to be caused by a certain bacterium.' The premise does not say that it is caused by the bacterium. It only says that it is thought to be caused by the bacterium.

Option (B) doesn't strengthen that it is actually the virus that causes the disease. It says that the virus aids the growth of bacterium and this growth leads to development of the disease. The cause of the disease is still the bacterium. That is, if the bacterium weren't present, the virus probably couldn't do anything alone. (Note the probably here. This statement doesn't say that the virus alone cannot do anything but it also doesn't say that the virus alone can cause the disease) But we want to strengthen that it is actually the virus which is the cause.

Hi, the data's implication is indeed "it's the virus that CAUSES the new disease", but no where in option C it mentions that virus is the CAUSE, it just mentions that the virus has been found in many cases.

I rejected the option on these grounds, do tell me where I went wrong.

Regards
RT

Option (C) SUPPORTS (improves the probability) the data's implication. You do not require to prove that data's implication is true beyond doubt. All you need to do is support it. Hence (C) is correct. If you did reject it on the grounds you mentioned, which option did you select?
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Get started with Veritas Prep GMAT On Demand for $199 Veritas Prep Reviews Intern Joined: 17 Feb 2015 Posts: 16 WE: Sales (Consulting) Followers: 0 Kudos [?]: 2 [0], given: 47 A newly discovered disease is thought to be caused by a [#permalink] ### Show Tags 17 May 2016, 01:57 Option (C) SUPPORTS (improves the probability) the data's implication. You do not require to prove that data's implication is true beyond doubt. All you need to do is support it. Hence (C) is correct. If you did reject it on the grounds you mentioned, which option did you select?[/quote] I marked B, because i thought it says the GROWTH of bacterium causes the disease and not only the bacterium. And the growth of bacterium is because of the virus, hence the virus causes the disease. Veritas Prep GMAT Instructor Joined: 16 Oct 2010 Posts: 7374 Location: Pune, India Followers: 2287 Kudos [?]: 15106 [1] , given: 224 Re: A newly discovered disease is thought to be caused by a [#permalink] ### Show Tags 17 May 2016, 02:39 1 This post received KUDOS Expert's post rohitt911 wrote: I marked B, because i thought it says the GROWTH of bacterium causes the disease and not only the bacterium. And the growth of bacterium is because of the virus, hence the virus causes the disease. What is data's implication? It is actually the virus that causes the new disease. Now you have to pick an answer choice which best supports 'it is actually the virus that causes the disease'. Focus on that. Option (B) doesn't strengthen that it is actually the virus that causes the disease. It says that the virus aids the growth of bacterium and this growth leads to development of the disease. The cause of the disease is still the bacterium. That is, if the bacterium weren't present, the virus probably couldn't do anything alone. (Note the probably here. This statement doesn't say that the virus alone cannot do anything but it also doesn't say that the virus alone can cause the disease) But we want to strengthen that it is actually the virus which is the cause. _________________ Karishma Veritas Prep | GMAT Instructor My Blog Get started with Veritas Prep GMAT On Demand for$199

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Re: A newly discovered disease is thought to be caused by a   [#permalink] 17 May 2016, 02:39

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# A newly discovered disease is thought to be caused by a

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