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In parts of South America, vitamin-A deficiency is a serious

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In parts of South America, vitamin-A deficiency is a serious [#permalink] New post 25 Dec 2008, 16:22
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In parts of South America, vitamin-A deficiency is a serious health problem, especially among children. In one region, agriculturists hope to improve nutrition by encouraging farmers to plant a new variety of sweet potato called SPK004 that is rich in betacarotene, which the body converts into vitamin A. The plan has good chances of success, since sweet potato is a staple of the region's diet and agriculture, and the varieties currently grown contain little beta-carotene.

which of the following, if true, most strongly supports the prediction that the plan will succeed?

a. There are other vegetables currently grown in the region that contain more beta-carotene than the currently cultivated varieties of sweet potato do.
b. The flesh of SPK004 differs from that of the currently cultivated sweet potatoes in colors and textures, so traditional foods would look somewhat different when prepared from SPK004.
c. For successful cultivation of SPK004, a soil significantly richer in nitrogen is needed than is needed for the varieties of sweet potato currently cultivated in the region.
d. There are no other varieties of sweet potato that are significantly richer in beta-carotene than SPK004 is.
e. the currently cultivated varieties of sweet potato contain no important nutrients that SPK004 lacks.


i was debating between D and E, and ultimately chose D. I think they both equally support the prediction that the plan will succeed. OA to follow..

Thanks.
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Re: CR: sweet potato [#permalink] New post 25 Dec 2008, 16:40
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gmat blows wrote:
In parts of South America, vitamin-A deficiency is a serious health problem, especially among children. In one region, agriculturists hope to improve nutrition by encouraging farmers to plant a new variety of sweet potato called SPK004 that is rich in betacarotene, which the body converts into vitamin A. The plan has good chances of success, since sweet potato is a staple of the region's diet and agriculture, and the varieties currently grown contain little beta-carotene.

which of the following, if true, most strongly supports the prediction that the plan will succeed?

a. There are other vegetables currently grown in the region that contain more beta-carotene than the currently cultivated varieties of sweet potato do.

Out of scope. Only Sweet potatoes matter here. if at all weakens.

b. The flesh of SPK004 differs from that of the currently cultivated sweet potatoes in colors and textures, so traditional foods would look somewhat different when prepared from SPK004.

Weakens. If people find it nontraditional they might not eat

c. For successful cultivation of SPK004, a soil significantly richer in nitrogen is needed than is needed for the varieties of sweet potato currently cultivated in the region.

Weakens

d. There are no other varieties of sweet potato that are significantly richer in beta-carotene than SPK004 is.



Isnt this merely a restatement from the stimulus? and the varieties currently grown contain little beta-carotene.


e. the currently cultivated varieties of sweet potato contain no important nutrients that SPK004 lacks.

This is the correct one, IMO. We can safely assume that SPK004 is going to replace the other varieties that will go into the staple diet of the people. If those SP's have some nutrients that the SPK004 does not have, this plan's ultimate goal of improving nutrition will not succeed.

i was debating between D and E, and ultimately chose D. I think they both equally support the prediction that the plan will succeed. OA to follow..

Thanks.


The answer E looks more like an assumption. But that's the best of the lot.
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Re: CR: sweet potato [#permalink] New post 25 Dec 2008, 21:16
Agree with E with the same explanation as from icandy.
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Re: CR: sweet potato [#permalink] New post 26 Dec 2008, 01:42
I go with D.
Because, the plan only talks about vitamin A deficiency and hence I would stick to the scope with D. ( rather than E ).
What is OA?
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Re: CR: sweet potato [#permalink] New post 26 Dec 2008, 23:34
Economist wrote:
I go with D.
Because, the plan only talks about vitamin A deficiency and hence I would stick to the scope with D. ( rather than E ).
What is OA?


Agree with you, "no....lack" makes E nonsense, even go outside the scope.
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Re: CR: sweet potato [#permalink] New post 27 Dec 2008, 08:59
Its E. Confusing D but its not for sure
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Re: CR: sweet potato [#permalink] New post 27 Dec 2008, 12:21
gmat blows wrote:
In parts of South America, vitamin-A deficiency is a serious health problem, especially among children. In one region, agriculturists hope to improve nutrition by encouraging farmers to plant a new variety of sweet potato called SPK004 that is rich in betacarotene, which the body converts into vitamin A. The plan has good chances of success, since sweet potato is a staple of the region's diet and agriculture, and the varieties currently grown contain little beta-carotene.

which of the following, if true, most strongly supports the prediction that the plan will succeed?

a. There are other vegetables currently grown in the region that contain more beta-carotene than the currently cultivated varieties of sweet potato do.
b. The flesh of SPK004 differs from that of the currently cultivated sweet potatoes in colors and textures, so traditional foods would look somewhat different when prepared from SPK004.
c. For successful cultivation of SPK004, a soil significantly richer in nitrogen is needed than is needed for the varieties of sweet potato currently cultivated in the region.
d. There are no other varieties of sweet potato that are significantly richer in beta-carotene than SPK004 is.
e. the currently cultivated varieties of sweet potato contain no important nutrients that SPK004 lacks.


i was debating between D and E, and ultimately chose D. I think they both equally support the prediction that the plan will succeed. OA to follow..

Thanks.


D has no effect since it merely repeats what we are already told. E, however states something we need to consider. Remember the conclusion states: "The plan has good chances of success" if E were false than how could the plan have good chances?
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Re: CR: sweet potato [#permalink] New post 27 Dec 2008, 20:56
IMO D....E speaks about other important nutrients but not Vitamin A....therefore IMO D...btw...wht is OA?
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Re: CR: sweet potato [#permalink] New post 29 Dec 2008, 20:06
You do not want to introduce another deficiency by curing one.
Therefore,
(E)
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Re: CR: sweet potato [#permalink] New post 27 May 2009, 00:32
Bidisha wrote:
You do not want to introduce another deficiency by curing one.
Therefore,
(E)


a. There are other vegetables currently grown in the region that contain more beta-carotene than the currently cultivated varieties of sweet potato do.We are concerned with sweet potato only. other vegetables are out of scope
b. The flesh of SPK004 differs from that of the currently cultivated sweet potatoes in colors and textures, so traditional foods would look somewhat different when prepared from SPK004.This has no effect on the argument. it can at max weaken the argument rather than strengthening it
c. For successful cultivation of SPK004, a soil significantly richer in nitrogen is needed than is needed for the varieties of sweet potato currently cultivated in the region. This weakens the argument. If other varities have less requirements then SPK004 cultivation may not get a good response.
d. There are no other varieties of sweet potato that are significantly richer in beta-carotene than SPK004 is. This is the correct answer because the argument is concerned with Vitamin A only.According to the argument, the fact that the body converts beta-carotene into vitamin A and SPK004 is best, makes this option a strong contender
e. the currently cultivated varieties of sweet potato contain no important nutrients that SPK004 lacks. We are concerned only with vitamin-A other nutrients are not important.

D
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Re: CR: sweet potato [#permalink] New post 28 May 2009, 01:39
E is my answer. Here is why.

The argument is that planting this new potato will improve nutrition-- it's NOT saying that it will maximize nutrition. If you plant this variety, you WILL improve nutrition.

So D is a trap answer.

E works because if this new type of potato did lack certain vitamins currently provided by sweet potatoes, the increase in Vitamin A could boost nutrition, but then missing other vitamins might cancel it out and even negate it's effects, hence lowering overall nutrition...

Hence E must be the correct answer.
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Re: CR: sweet potato [#permalink] New post 28 May 2009, 11:49
Hades wrote:
E is my answer. Here is why.

The argument is that planting this new potato will improve nutrition-- it's NOT saying that it will maximize nutrition. If you plant this variety, you WILL improve nutrition.

So D is a trap answer.

E works because if this new type of potato did lack certain vitamins currently provided by sweet potatoes, the increase in Vitamin A could boost nutrition, but then missing other vitamins might cancel it out and even negate it's effects, hence lowering overall nutrition...

Hence E must be the correct answer.


I am still confused between D and E. Plan is to improve the nutrition. so the suggestion is to plant SPK004.
D: Since SPK004 contains most beta-carotene (which will give vitamin A) as compared to other varieties. So the nutrition is improved.

E: SPK004 has all the important nutrients that are present in currently cultivated varieties. Also, SPK004 is rich in betacarotene (Given premise). This information doesn't tell me whether SPK004 is better than the currently cultivated varieties or not. Premise just says SPK004 is rich in betacarotene. It is also possible that SPK004's betacarotene content is equal to one of its competitive variety. The argument and the premise together are not sufficient to conclude that the nutrition will improve (it can remain same also).
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Re: CR: sweet potato [#permalink] New post 28 May 2009, 16:12
E for me
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Re: CR: sweet potato [#permalink] New post 28 May 2009, 16:21
The fact that there are other plants that have MORE vitamin A could potentially weaken it-- why plant it if there are better plants?

Do you see that it doesn't strengthen it?

E is correct because it eliminates a possible weakening of the argument-- suppose the opposite of E were true, that the current potato plants have important nutrients that the new plant lacks-- planting would increase Vitamin A, but then there would be a decrease in other important nutrients, hence it could potentially lower nutrition, not improve it.
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Re: CR: sweet potato [#permalink] New post 28 May 2009, 20:40
Hades wrote:
The fact that there are other plants that have MORE vitamin A could potentially weaken it-- why plant it if there are better plants?

Do you see that it doesn't strengthen it?

E is correct because it eliminates a possible weakening of the argument-- suppose the opposite of E were true, that the current potato plants have important nutrients that the new plant lacks-- planting would increase Vitamin A, but then there would be a decrease in other important nutrients, hence it could potentially lower nutrition, not improve it.

@Hades
what you are doing here is negating the options.

Negating D: There are other varieties of sweet potato that are significantly richer in beta-carotene than SPK004 is.

Negating E: the current potato plants have important nutrients that the new plant lacks-- planting would increase Vitamin A, but then there would be a decrease in other important nutrients, hence it could potentially lower nutrition, not improve it. (ur lines)

Both weaken the plan.

can u pls help
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Re: CR: sweet potato [#permalink] New post 28 May 2009, 20:49
mbaMission wrote:
Hades wrote:
The fact that there are other plants that have MORE vitamin A could potentially weaken it-- why plant it if there are better plants?

Do you see that it doesn't strengthen it?

E is correct because it eliminates a possible weakening of the argument-- suppose the opposite of E were true, that the current potato plants have important nutrients that the new plant lacks-- planting would increase Vitamin A, but then there would be a decrease in other important nutrients, hence it could potentially lower nutrition, not improve it.

@Hades
what you are doing here is negating the options.

Negating D: There are other varieties of sweet potato that are significantly richer in beta-carotene than SPK004 is.

Negating E: the current potato plants have important nutrients that the new plant lacks-- planting would increase Vitamin A, but then there would be a decrease in other important nutrients, hence it could potentially lower nutrition, not improve it. (ur lines)

Both weaken the plan.

can u pls help


Negating D doesn't weaken the argument. Who cares if there are other potatoes with more Vitamin A-- planting this variety, that's better than what's currently used, will still improve nutrition. It doesn't affect the argument that planting the potatoes will improve nutrition (argument is IMPROVE, not MOST IMPROVE/MAXIMIZE/etc... ready very carefully).

Negating E weakens the argument, hence E strengthens the argument.
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Re: CR: sweet potato [#permalink] New post 28 May 2009, 22:45
Hades wrote:
mbaMission wrote:
Hades wrote:
The fact that there are other plants that have MORE vitamin A could potentially weaken it-- why plant it if there are better plants?

Do you see that it doesn't strengthen it?

E is correct because it eliminates a possible weakening of the argument-- suppose the opposite of E were true, that the current potato plants have important nutrients that the new plant lacks-- planting would increase Vitamin A, but then there would be a decrease in other important nutrients, hence it could potentially lower nutrition, not improve it.

@Hades
what you are doing here is negating the options.

Negating D: There are other varieties of sweet potato that are significantly richer in beta-carotene than SPK004 is.

Negating E: the current potato plants have important nutrients that the new plant lacks-- planting would increase Vitamin A, but then there would be a decrease in other important nutrients, hence it could potentially lower nutrition, not improve it. (ur lines)

Both weaken the plan.

can u pls help


Negating D doesn't weaken the argument. Who cares if there are other potatoes with more Vitamin A-- planting this variety, that's better than what's currently used, will still improve nutrition. It doesn't affect the argument that planting the potatoes will improve nutrition (argument is IMPROVE, not MOST IMPROVE/MAXIMIZE/etc... ready very carefully).

Negating E weakens the argument, hence E strengthens the argument.


the argument is targeted @ improving the nutrition i.e vitamin A (only) thr SPK004. So,
Negating E: the current potato plants have important nutrients that the new plant lacks -- this definitely weakens the argument when we are considering all the vitamins (including A) . However, if we consider only vitamin A then this doesnt weaken the argument.

SPK004 is rich in vitamin A -- the main point of argument....its still true.

from Argument:
vitamin-A deficiency is a serious health problem, especially among children. In one region, agriculturists hope to improve nutrition (implicit : Vitamin A ) by encouraging farmers to plant a new variety of sweet potato called SPK004.
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Re: CR: sweet potato [#permalink] New post 28 May 2009, 22:50
Argument isn't "improving nutrition exclusively via Vitamin A", it's "improving nutrition".

If you take out important nutrients besides vitamin A, you're decreasing nutrition.
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Re: CR: sweet potato [#permalink] New post 28 May 2009, 22:55
Also, I would like to add some something else:

Negation test is applicable to Assumption questions. Strengthen the arguments may or may not pass/depend on the negation test.In strengthen the argument question we select the option which supports the argument -- better than the rest of the options -- doesn't matter if it is only 1% -- provided it's the only available option.


Pls correct me if i am wrong.
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Re: CR: sweet potato [#permalink] New post 28 May 2009, 23:01
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You can always strengthen an argument by eliminating something that could weaken it.

ie. I was walking down the street, and I slipped and fell and broke my nose. The leaves on the street caused me to slip.

Something that would strengthen it:
The street wasn't covered in ice. (Negate it: the street was covered in ice --> this would weaken it).

I've explained the same thing 5 times now... go back and think about the question, :)
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Re: CR: sweet potato   [#permalink] 28 May 2009, 23:01
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