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# Ordinary mountain sickness, a common condition among mountain climbers

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Senior Manager
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Ordinary mountain sickness, a common condition among mountain climbers  [#permalink]

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03 Mar 2017, 05:30
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95% (hard)

Question Stats:

46% (02:02) correct 54% (02:24) wrong based on 607 sessions

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Ordinary mountain sickness, a common condition among mountain climbers, and one from which most people can recover, is caused by the characteristic shortage of oxygen in the atmosphere at high altitudes. Cerebral edema, a rarer disruption of blood circulation in the brain that quickly becomes life-threatening if not correctly treated from its onset, can also be caused by a shortage of oxygen. Since the symptoms of cerebral edema resemble those of ordinary mountain sickness, cerebral edema is especially dangerous at high altitudes.

Which one of the following is an assumption on which the argument depends?

A. The treatment for ordinary mountain sickness differs from the treatment for cerebral edema.

B. Cerebral edema can cause those who suffer from it to slip into coma within a few hours.

C. Unlike cerebral edema, ordinary mountain sickness involves no disruption of blood circulation in the brain.

D. Shortage of oxygen at extremely high altitude is likely to affect thinking processes and cause errors of judgement.

E. Most people who suffer from ordinary mountain sickness recover without any special treatment.
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Re: Ordinary mountain sickness, a common condition among mountain climbers  [#permalink]

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03 Mar 2017, 07:02
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Argument: Mountain Sickness and Cerebral Edema have the same cause, with the latter being serious.
Assumption: Mountain Sickness and Cerebral Edema cannot be distinguished

A. The treatment for ordinary mountain sickness differs from the treatment for cerebral edema. - Correct. Negate A: Treatment for mountain sickness does not differ from treatment for cerebral edema. This means that cerebral edema gets cured even when treated for mountain sickness - Argument falls apart.

B. Cerebral edema can cause those who suffer from it to slip into coma within a few hours. - Incorrect. Irrelevant.

C. Unlike cerebral edema, ordinary mountain sickness involves no disruption of blood circulation in the brain. - Incorrect. Irrelevant.

D. Shortage of oxygen at extremely high altitude is likely to affect thinking processes and cause errors of judgement. - Incorrect. Irrelevant.

E. Most people who suffer from ordinary mountain sickness recover without any special treatment. - Incorrect. Negate E: Most people who suffer from ordinary mountain sickness recover without any special treatment - This does nothing to the argument.

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Re: Ordinary mountain sickness, a common condition among mountain climbers  [#permalink]

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03 Mar 2017, 21:08
the answer should be A,although have a doubt on C too can someone explain a better reasoning to eliminate C?
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04 Mar 2017, 23:38
The answer to this question lies in the last line of the question which states that "Since the symptoms of cerebral edema resemble those of ordinary mountain sickness, cerebral edema is especially dangerous at high altitudes. "

Now since the symptoms of cerebral edema and mountain sickness are similar so how does the author conclude that cerebral edema is dangerous whereas "most people can recover" from mountain sickness. This is because the cure for both are not the same, so if someone develops symptoms of cerebral edema which is similar to mountain sickness so he will treat himself for mountain sickness and not cerebral edema. This makes it dangerous.

Option C states "Unlike cerebral edema, ordinary mountain sickness involves no disruption of blood circulation in the brain".
Whether mountain sickness involves disruption of blood or not is irrelevant as long as it's symptoms are same as cerebral edema.

Hope this clarifies your doubt nks2611
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05 Mar 2017, 00:24
That makes sense
Thanks coolnuts

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Re: Ordinary mountain sickness, a common condition among mountain climbers  [#permalink]

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09 Aug 2017, 09:26
Confused between A and E - A makes perfect sense, but E does too: if most people do not need special treatment to recover from mountain sickness, chances are most people who think they've got mountain sickness won't attempt any treatment - in that case it wouldn't matter if the treatments for two deceases are the same or different (even if the treatments are the same, cerebral edema will be especially dangerous at high altitudes, just because most people will dismiss it as a mountain sickness which doesn't not require special treatment). What's the source of this question?
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14 Jan 2018, 15:11
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The best way to proceed when you're down to answer choices (A) and (C) like this is to apply the negation test. This is a necessary assumption question, so the the assumption is needed for the conclusion to be true. Without the assumption the conclusion would be undermined.

So negate the answer choices one-by-one and when you negate the correct answer that should destroy the conclusion. So let's keep track of what the conclusion is. The argument concludes that cerebral edema is especially dangerous at high altitudes.

The treatment for ordinary mountain sickness does not differ from the treatment for cerebral edema.

Well if the treatment is the same, then cerebral edema is not especially dangerous at high altitudes because if the climbers treated for ordinary mountain sickness instead of cerebral edema, the climbers would still be treating the cerebral edema - the treatments would be the same.

Ordinary mountain sickness involves some disruption of blood circulation in the brain.

Even if this were true, cerebral edema could still be especially dangerous at high altitudes. The answer choice is not about cerebral edema in any way, and so doesn't challenge the conclusion in any way. Thus answer choice (C) is not correct

by manhattan
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Re: Ordinary mountain sickness, a common condition among mountain climbers  [#permalink]

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14 Jan 2018, 16:29
venstein wrote:
Confused between A and E - A makes perfect sense, but E does too: if most people do not need special treatment to recover from mountain sickness, chances are most people who think they've got mountain sickness won't attempt any treatment - in that case it wouldn't matter if the treatments for two deceases are the same or different (even if the treatments are the same, cerebral edema will be especially dangerous at high altitudes, just because most people will dismiss it as a mountain sickness which doesn't not require special treatment). What's the source of this question?

If you negated the letter E you will see that it can not be the answer.

If most people do not need special treatment to recover form mountain sickness than it is dangerous !!! But if they need a special treatment to recover from mountain sickness but the treatment is not effective against cerebral edema , than it will also be dangerous. So the argument does not depend on that.

Hope it's clear !
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31 Jan 2018, 14:02
I choose A. If the treatment of two kinds of sickness is the same, cerebral edema wouldn't be that dangerous at high altitude because people would cure it as cure normal mountain sickness.
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Ordinary mountain sickness, a common condition among  [#permalink]

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27 Aug 2018, 03:55
I think C is the correct option.
It clearly differentiates the line of severity. One can revover from Mountain sickness, but can not recover from CE.

CONCLUSION will break-down if you negate this.

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Re: Ordinary mountain sickness, a common condition among mountain climbers  [#permalink]

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27 Aug 2018, 06:34
vikasp99 wrote:
Ordinary mountain sickness, a common condition among mountain climbers, and one from which most people can recover, is caused by the characteristic shortage of oxygen in the atmosphere at high altitudes. Cerebral edema, a rarer disruption of blood circulation in the brain that quickly becomes life-threatening if not correctly treated from its onset, can also be caused by a shortage of oxygen. Since the symptoms of cerebral edema resemble those of ordinary mountain sickness, cerebral edema is especially dangerous at high altitudes.

Which one of the following is an assumption on which the argument depends?

A. The treatment for ordinary mountain sickness differs from the treatment for cerebral edema.

B. Cerebral edema can cause those who suffer from it to slip into coma within a few hours.

C. Unlike cerebral edema, ordinary mountain sickness involves no disruption of blood circulation in the brain.

D. Shortage of oxygen at extremely high altitude is likely to affect thinking processes and cause errors of judgement.

E. Most people who suffer from ordinary mountain sickness recover without any special treatment.

I did not get how A is the answer.
Any one pls give some explanation.
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Re: Ordinary mountain sickness, a common condition among mountain climbers  [#permalink]

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27 Aug 2018, 10:16
1
tejyr wrote:
vikasp99 wrote:
Ordinary mountain sickness, a common condition among mountain climbers, and one from which most people can recover, is caused by the characteristic shortage of oxygen in the atmosphere at high altitudes. Cerebral edema, a rarer disruption of blood circulation in the brain that quickly becomes life-threatening if not correctly treated from its onset, can also be caused by a shortage of oxygen. Since the symptoms of cerebral edema resemble those of ordinary mountain sickness, cerebral edema is especially dangerous at high altitudes.

Which one of the following is an assumption on which the argument depends?

A. The treatment for ordinary mountain sickness differs from the treatment for cerebral edema.

B. Cerebral edema can cause those who suffer from it to slip into coma within a few hours.

C. Unlike cerebral edema, ordinary mountain sickness involves no disruption of blood circulation in the brain.

D. Shortage of oxygen at extremely high altitude is likely to affect thinking processes and cause errors of judgement.

E. Most people who suffer from ordinary mountain sickness recover without any special treatment.

I did not get how A is the answer.
Any one pls give some explanation.

Imagine you have fever and typhoid. Symptoms of both are same at the beginning - high temperature and weakness. Now if you aren't able to distinguish the two based on these 2 symptoms, then a pill to cure fever will not help you to cure typhoid.
Option A essentially tells that the treatment of one will not work for the other and the person may die because of not getting the apt treatment ---> strengthening the conclusion that cerebral edema is especially dangerous at high altitudes (due to the similarity in symptoms).
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Re: Ordinary mountain sickness, a common condition among mountain climbers  [#permalink]

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28 Aug 2018, 10:20
TaN1213 wrote:
tejyr wrote:
vikasp99 wrote:
Ordinary mountain sickness, a common condition among mountain climbers, and one from which most people can recover, is caused by the characteristic shortage of oxygen in the atmosphere at high altitudes. Cerebral edema, a rarer disruption of blood circulation in the brain that quickly becomes life-threatening if not correctly treated from its onset, can also be caused by a shortage of oxygen. Since the symptoms of cerebral edema resemble those of ordinary mountain sickness, cerebral edema is especially dangerous at high altitudes.

Which one of the following is an assumption on which the argument depends?

A. The treatment for ordinary mountain sickness differs from the treatment for cerebral edema.

B. Cerebral edema can cause those who suffer from it to slip into coma within a few hours.

C. Unlike cerebral edema, ordinary mountain sickness involves no disruption of blood circulation in the brain.

D. Shortage of oxygen at extremely high altitude is likely to affect thinking processes and cause errors of judgement.

E. Most people who suffer from ordinary mountain sickness recover without any special treatment.

I did not get how A is the answer.
Any one pls give some explanation.

Imagine you have fever and typhoid. Symptoms of both are same at the beginning - high temperature and weakness. Now if you aren't able to distinguish the two based on these 2 symptoms, then a pill to cure fever will not help you to cure typhoid.
Option A essentially tells that the treatment of one will not work for the other and the person may die because of not getting the apt treatment ---> strengthening the conclusion that cerebral edema is especially dangerous at high altitudes (due to the similarity in symptoms).
Re: Ordinary mountain sickness, a common condition among mountain climbers   [#permalink] 28 Aug 2018, 10:20
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