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# Every year many people become ill because of airborne mold

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Re: Every year many people become ill because of airborne mold [#permalink]

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11 Nov 2012, 23:50
IMO A is teh right answer...
Cause and effect

Leakage ------> growth of Mold

Mold doesnt cause the moisture.
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Re: Every year many people become ill because of airborne mold [#permalink]

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13 Nov 2012, 09:53
vivtai wrote:
Every year many people become ill because of airborne mold spores in their homes. After someone becomes ill, specialists are often hired to eradicate the mold. These specialists look in damp areas of the house, since mold is almost always found in places where there is substantial moisture. If one wishes to avoid mold poisoning, then, one should make sure to keep all internal plumbing in good condition to prevent leakage that could serve as a breeding ground for mold.

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

Mold itself does not create moisture.

Most homeowners know enough about plumbing to determine whether theirs is in good condition.

Mold cannot grow in dry areas.

No varieties of mold are harmless.

Mold spores cannot be filtered from the air.

OA will be provided after discussion, thanks!

Conclusion: If one wishes to avoid mold poisoning, then, one should make sure to keep all internal plumbing in good condition to prevent leakage that could serve as a breeding ground for mold
Premise: specialists look in damp areas of the house, since mold is almost always found in places where there is substantial moisture

As we can see that the premise says that the mold is almost always found in moist areas and then the conclusion asks us to keep plumbing in order to prevent leakage that could serve as breeding ground for mold. Thus, the observation that mold is almost always found in moist areas is led to mean that moist areas lead to molds, not the other way around.

In other words, the observations is like X and Y are always found together. Then, we conclude from this that X leads to Y. In deriving this conclusion, we are assuming that Y does not lead to X and there is no other substance Z, which could lead to both X and Y.

Thus, when we derive that moist areas act as breeding grounds for mold, we are assuming that Mold itself does not create moisture (option A).

Therefore, option A is correct.

Regards,
CJ
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Re: Every year many people become ill because of airborne mold [#permalink]

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10 Feb 2013, 08:03
if the argument were "..since mold is always found in places where there is substantial moisture.." The C would be correct?!
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Re: Every year many people become ill because of airborne mold [#permalink]

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10 Feb 2013, 20:13
IanSolo wrote:
if the argument were "..since mold is always found in places where there is substantial moisture.." The C would be correct?!

Dear IanSolo,

C cannot be true in that case because if mold is always found in places where there is substantial moisture then it doesn't grow in dry areas
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Re: Every year many people become ill because of airborne mold [#permalink]

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11 Feb 2013, 02:29
SravnaTestPrep wrote:
IanSolo wrote:
if the argument were "..since mold is always found in places where there is substantial moisture.." The C would be correct?!

Dear IanSolo,

C cannot be true in that case because if mold is always found in places where there is substantial moisture then it doesn't grow in dry areas

could be a defender assumption? no?
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Re: Every year many people become ill because of airborne mold [#permalink]

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11 Feb 2013, 16:56
IanSolo wrote:
SravnaTestPrep wrote:
IanSolo wrote:
if the argument were "..since mold is always found in places where there is substantial moisture.." The C would be correct?!

Dear IanSolo,

C cannot be true in that case because if mold is always found in places where there is substantial moisture then it doesn't grow in dry areas

could be a defender assumption? no?

Sorry, I did not read choice C properly. You are right.
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Re: Every year many people become ill because of airborne mold [#permalink]

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11 Feb 2013, 21:15
1
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Expert's post
IanSolo wrote:
if the argument were "..since mold is always found in places where there is substantial moisture.." The C would be correct?!

Actually, no. C would still not be correct. There is no material change in the argument if you remove 'almost'.

The conclusion of the argument is: If you want to avoid mold poisoning, keep all plumbing in good condition.

The point is that moisture could be created by something else - excessive rain, water sprinklers, mold itself - so by just keeping plumbing in good condition, you may not be able to avoid mold.
If mold actually creates moisture, it will always be found in places where there is moisture.

If at all, (C) can be an inference in case you remove 'almost'. The premise gives you that mold is always found in moist places. We must take the premise to be true so we can infer that it cannot grow in dry areas (though, the inference is not perfect. We can say that it can grow in dry areas but it cannot be found there because it is not visible or something...).
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Re: Every year many people become ill because of airborne mold [#permalink]

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12 Feb 2013, 07:07
Correct Choice is A. Here is my explanation.

Here the author has attributed the dampening of areas to the leakage thru internal plumbing. While doing so he assumes that there are no causes other than internal plumbing responsible for dampening of places. We would look for similar reasoning

A) This choice eliminates the posibility of other cause. Correct.

B) This choice is fantastic and tempting, however passage says homeowner's responsibility is to keep the plumbing in good condition, which he/she can do by calling plumber also and not necessary to personally determine the condition. So incorrect.

C) Wrong. Premise clearly states that molds almost always found in places where there is moisture (We can not refute premises in assumption/weaken questions)

D) irrelevant

E) irrelevant
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Re: Every year many people become ill because of airborne mold [#permalink]

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23 Feb 2013, 11:53
Every year many people become ill because of airborne mold spores in their homes. After someone becomes ill, specialists are often hired to eradicate the mold. These specialists look in damp areas of the house, since mold is almost always found in places where there is substantial moisture. If one wishes to avoid mold poisoning, then, one should make sure to keep all internal plumbing in good condition to prevent leakage that could serve as a breeding ground for mold.

Which of the following is an assumption on which the argument depends?
(A)Mold itself does not create moisture.
(B)Most homeowners know enough about plumbing to determine whether theirs is in good condition.
(C)Mold cannot grow in dry areas.
(D)No varieties of mold are harmless.
(E)Mold spores cannot be filtered from the air.
Need explanation...................
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Re: Every year many people become ill because of airborne mold [#permalink]

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23 Feb 2013, 12:31
mun23 wrote:
Every year many people become ill because of airborne mold spores in their homes. After someone becomes ill, specialists are often hired to eradicate the mold. These specialists look in damp areas of the house, since mold is almost always found in places where there is substantial moisture. If one wishes to avoid mold poisoning, then, one should make sure to keep all internal plumbing in good condition to prevent leakage that could serve as a breeding ground for mold.

Which of the following is an assumption on which the argument depends?
(A)Mold itself does not create moisture.
(B)Most homeowners know enough about plumbing to determine whether theirs is in good condition.
(C)Mold cannot grow in dry areas.
(D)No varieties of mold are harmless.
(E)Mold spores cannot be filtered from the air.
Need explanation...................

Hi mun23,

The argument shows a causal relationship between the premises and the conclusion. The conclusion states that one should avoid any moisture at home if one wants to stay away form mold poisoning. The causal relationship is that moisture causes mold. The assumption in this causal argument should support the causal direction of the conclusion. i.e. the assumption must prove that A causes B or moisture causes obesity and nervousness.

The assumptions in a causal arguments are often of two types:

i) Assumptions that support the causality of the argument either by eliminating an alternate cause of the conclusion OR
ii) by demonstrating that the conclusion, it it exists, is in proper direction. In other words A is caused by B and not B has caused A.

Any option which does not tell us anything about the causal link between moisture and mold growth can be safely eliminated.

(A)Mold itself does not create moisture.

This is in fact ii) from above, i.e. it states that the conclusion exists in proper direction. If mold itself does not cause moisture then it only the moisture that causes mold and the conclusion that "one has to stay away from moisture to avoid mold poisoning" is validated.

(B)Most homeowners know enough about plumbing to determine whether theirs is in good condition.

Not relevant, no link between moisture and mould

(C)Mold cannot grow in dry areas.

Again, irrelevant, the stimulus talks about mold growing in areas with moisture.

(D)No varieties of mold are harmless.

Harmfulness of varieties is again irrelevant.

(E)Mold spores cannot be filtered from the air.

Again irrelevant, whether molds can be filtered will have no effect on our conclusion.

You can try a similar example for practice from the post below.

the-popular-belief-that-a-snake-s-age-can-be-determined-by-147522.html#p1184417

Hope that helps,

Vercules
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Re: Every year many people become ill because of airborne mold [#permalink]

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27 Feb 2013, 04:37
Every year many people become ill because of airborne mold spores in their homes. After someone becomes ill, specialists are often hired to eradicate the mold. These specialists look in damp areas of the house, since mold is almost always found in places where there is substantial moisture. If one wishes to avoid mold poisoning, then, one should make sure to keep all internal plumbing in good condition to prevent leakage that could serve as a breeding ground for mold.

Which of the following is an assumption on which the argument depends?
(A)Mold itself does not create moisture.Negate it. Mold ---> moisture, this reverses the Cause & effect order. CORRECT
(B)Most homeowners know enough about plumbing to determine whether theirs is in good condition. Doesn't matter whether homeowners know enough, then can hire plumber for regular checkups
(C)Mold cannot grow in dry areas. Opposite. OFS
(D)No varieties of mold are harmless.OFS. Passage doesn't talk about varities
(E)Mold spores cannot be filtered from the air. OFS

Cause & Effect list: Mold spore --- Causes---> illness. Dampness / moisture --- breeds---> mold spore
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Re: Every year many people become ill because of airborne mold [#permalink]

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14 Apr 2013, 19:52
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Re: Every year many people become ill because of airborne mold [#permalink]

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11 Apr 2015, 23:59
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Re: Every year many people become ill because of airborne mold [#permalink]

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04 Jul 2016, 11:48
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Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

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Re: Every year many people become ill because of airborne mold [#permalink]

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13 Aug 2016, 23:14
Every year many people become ill because of airborne mold spores in their homes. After someone becomes ill, specialists are often hired to eradicate the mold. These specialists look in damp areas of the house, since mold is almost always found in places where there is substantial moisture. If one wishes to avoid mold poisoning, then, one should make sure to keep all internal plumbing in good condition to prevent leakage that could serve as a breeding ground for mold.

1> even if you keep internal plumbing in good condition, there is also something else that can become breeding ground for mold.

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

A. Mold cannot grow in dry areas. if mold can grow in dry areas, keeping good plumbing condition will not help. aligned with prethinking 1.
B. Most homeowners know enough about plumbing to determine whether theirs is in good condition.
Even if they dont know, if they keep it in good condition, they will avoid mold. no effect on conclusion.
C. Mold itself does not create moisture. :-

if
mold => [color=#0000ff]always
found in places where there is a substantial moisture
argument assumes that moisture is not there because of mold. if that so then there is something else that generates breeding ground for mold. so even if keep all internal plumbing in good condition, mold will breed.

but it is :- mold is almost always found in places where there is substantial moisture. so we cant say that mold generates moisture because if that is so, then there would always be moisture and not "almost always". [/color]
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Re: Every year many people become ill because of airborne mold [#permalink]

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07 Mar 2017, 03:25
The basic structure of this argument is fact that “mold is almost always found in places where there is substantial moisture,” so therefore, to avoid mold and the resultant mold poisoning, then people should take steps to prevent wet areas. This argument assumes that wet areas occur first, causing mold to grow. Conversely, this assumption requires that the mold growth itself does not occur first, creating wet areas as a result.

Ans. C - Mold itself does not create moisture.

Regarding Ans. A - Even if mold could grow in dry areas, the fact that mold is almost always found in wet areas is still valid. This is the fact upon which the argument is based, so the argument does not depend on the unnecessarily absolute assertion that mold cannot grow in dry areas
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Re: Every year many people become ill because of airborne mold [#permalink]

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07 Mar 2017, 05:30
As if we negate it then mold itself creates moisture that really makes argument irrelevant , so c must be the necessary info.

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Re: Every year many people become ill because of airborne mold   [#permalink] 07 Mar 2017, 05:30

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