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Although it is the opinion of an expert, aired in a recent radio inter

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Although it is the opinion of an expert, aired in a recent radio inter  [#permalink]

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New post 28 Aug 2015, 08:49
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  55% (hard)

Question Stats:

65% (02:12) correct 35% (02:38) wrong based on 297 sessions

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Although it is the opinion of an expert, aired in a recent radio interview, clearly the statement that our skin should constantly be protected from the sun's rays is inaccurate. There is a possibility that in the next 50 to 100 years the damage done to the ozone layer will have been corrected so that the protection that it once granted us will be restored. However, based on current evidence, harmful UV rays are penetrating our atmosphere. Still, our bodies need sunlight and UV for the synthesis of vitamin D, a vital element in our ability to defend ourselves from a variety of serious illnesses even though the benefits of skin protective products have been proven.

Which of the following, if true, most strongly supports the above conclusion?


A) Constant and complete protection from the sun's rays means that the sunlight that our bodies would usually absorb, which spans a wavelength range of 290 to 400 nanometers, would only reach our skin after being filtered by the organic and inorganic particles in sunscreen lotion.

B) Of the three bands of ultraviolet light, the bands UVA and UVB, through overexposure, are the major factors responsible for sunburn, photodermatoses, the aging of skin, and skin cancer.

C) The behavior of skin cells is altered by ultraviolet light which changes the behavior of genes and damages DNA, leaving permanent mutations with changes in the growth characteristics of the skin, ultimately resulting in a risk of cancer.

D) Rickets, a disease predominant in children that was first connected to a deficiency in vitamin D by medical experts over a century ago, can be corrected with treatments of controlled exposure to ultraviolet light.

E) Contrary to popular belief, pollution levels, geographic location, percentage of cloud cover, and time of day are characteristics that do not directly influence parameters of ultraviolet light exposure and consequently, vitamin D levels.

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Re: Although it is the opinion of an expert, aired in a recent radio inter  [#permalink]

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New post 13 Feb 2016, 13:08
OE found on economist website

https://gmat.economist.com/gmat-practic ... -questions


To solve this Conclusion Strengthening question, first break down the argument. The first sentence uses the conclusion word clearly and is, therefore, the conclusion. The following three sentences are premises since they all contain factual information:

Premise A: in the next 50 to 100 years the ozone layer may be repaired
+
Premise B: at present, UV rays are penetrating our atmosphere
+
Premise C: the human body needs UV to make vitamin D but sunscreen is also beneficial
=
Conclusion: the opinion that our skin should not receive any sunlight is incorrect

Possible assumption: sunlight is somehow also good for us

Strengthening Data: ?

You are required to find data that supports the statement that the constantly being protected from sunlight is not a good thing. The correct answer could be one that confirms the argument's assumption.

This answer choice (Option D) strengthens the conclusion that the expert's opinion is inaccurate in two ways. Firstly, it tells us of a disease that is caused by not getting enough vitamin D which we are told by the premises is created by ultraviolet exposure. Secondly, it links ultraviolet light to the curing of the disease, showing that it is actually a necessary factor in the human biological system.
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Re: Although it is the opinion of an expert, aired in a recent radio inter  [#permalink]

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New post 13 Feb 2016, 13:19
Hi Harley1980 \ chetan2u,

I am not convinced with OE. :(

My approach-

I thought the conclusion is "clearly the statement that our skin should constantly be protected from the sun's rays is inaccurate."
And we need to strengthen it.

So, we need to find something which says that--> Our skin is NOT protected from Sun.

The argument is solely concerned with skin. So, any disease apart from skin is out of scope whether it is fever, pneumonia, diarrhea or anything..we don't care. We only care about SKIN disease.

Therefore I eliminated OA D which deals with rickets .

Please help...
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Re: Although it is the opinion of an expert, aired in a recent radio inter  [#permalink]

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New post 14 Jul 2016, 23:51
PrakharGMAT wrote:
Hi Harley1980 \ chetan2u,

I am not convinced with OE. :(

My approach-

I thought the conclusion is "clearly the statement that our skin should constantly be protected from the sun's rays is inaccurate."
And we need to strengthen it.

So, we need to find something which says that--> Our skin is NOT protected from Sun.

The argument is solely concerned with skin. So, any disease apart from skin is out of scope whether it is fever, pneumonia, diarrhea or anything..we don't care. We only care about SKIN disease.

Therefore I eliminated OA D which deals with rickets .

Please help...



Prakhar - With due respect to your opinon, I will disagree with your conclusion and my conclusion is that we DO not need to protect ourseleves ALWAYS from the rays or in other words, getting those Rays exposed sometimes to the skins is OK.

I believe, on CR questions, it is important at times to work from incorrect choices to correct ones. If you notice, all the other choices are basically not suporting the conclusion and thus, can be eliminated. Option D, though, talks about a disease, is giving us a case where getting exposed to Sunlight is important and thus, is supporting our conclusion that it is at times, better to get exposure to sun rays.

I hope the explanation does help in some way. Please do let me know in case I missed something in my explanation above. All the best to you !!
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Re: Although it is the opinion of an expert, aired in a recent radio inter  [#permalink]

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New post 17 Jul 2016, 07:17
Not very fond of this question.1
It looks like two fragments have been linked together and i had a hard time identifying the conclusion here!
Experts please pour in your insights!
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Re: Although it is the opinion of an expert, aired in a recent radio inter  [#permalink]

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New post 17 Jul 2016, 08:01
Top Contributor
goforgmat wrote:
Not very fond of this question.1
It looks like two fragments have been linked together and i had a hard time identifying the conclusion here!
Experts please pour in your insights!


Hello, goforgmat

I think that conclusion is
"the statement that our skin should constantly be protected from the sun's rays is inaccurate"
because:
"our bodies need sunlight and UV for the synthesis of vitamin D, a vital element in our ability to defend ourselves from a variety of serious illnesses"

How can we strange this conclusion? By adding some evidence that will clearly state that the sun can give vitamin D and that vitamin D is can cure some disease:

Answer D does that:

D) Rickets, a disease predominant in children that was first connected to a deficiency in vitamin D by medical experts over a century ago, can be corrected with treatments of controlled exposure to ultraviolet light.
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Re: Although it is the opinion of an expert, aired in a recent radio inter  [#permalink]

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New post 26 Sep 2018, 13:02
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Re: Although it is the opinion of an expert, aired in a recent radio inter &nbs [#permalink] 26 Sep 2018, 13:02
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