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Using broad-spectrum weed killers on weeds that are competing with

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Using broad-spectrum weed killers on weeds that are competing with [#permalink]

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Which of the following most logically completes the argument below?

Using broad-spectrum weed killers on weeds that are competing with crops for sunlight, water, and nutrients presents a difficulty: how to keep the crop from being killed along with the weeds. For at least some food crops, specially treated seed that produces plants resistant to weed killers is under development. This resistance wears off as the plants mature. Therefore, the special seed treatment will be especially useful for plants that _____________ .

(A) produce their crop over an extended period of time, as summer squash does
(B) produce large seeds that are easy to treat individually, as corn and beans do
(C) provide, as they approach maturity, shade dense enough to keep weeds from growing
(D) are typically grown in large tracts devoted to a single crop
(E) are cultivated specifically for the seed they produce rather than for their leaves or roots
[Reveal] Spoiler: OA

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Re: Using broad-spectrum weed killers on weeds that are competing with [#permalink]

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betterscore wrote:
Which of the following most logically completes the argument below?

Using broad-spectrum weed killers on weeds that are competing with crops for sunlight, water, and nutrients presents a difficulty: how to keep the crop from being killed along with the weeds. For at least some food crops, specially treated seed that produces plants resistant to weed killers is under development. This resistance wears off as the plants mature. Therefore, the special seed treatment will be especially useful for plants that _____________ .

(A) produce their crop over an extended period of time, as summer squash does
(B) produce large seeds that are easy to treat individually, as corn and beans do
(C) provide, as they approach maturity, shade dense enough to keep weeds from growing
(D) are typically grown in large tracts devoted to a single crop
(E) are cultivated specifically for the seed they produce rather than for their leaves or roots



..... weeds that are competing with crops for sunlight, water, and nutrients ....

Special seeds are weed resistant but the Resistance goes off one they mature,
(C) says that
-provide, as they approach maturity, shade dense enough to keep weeds from growing
means they will become self sufficient when grow up and hence can protect themselves even if the resistance goes off which was there by the virtue og the seeds they grew on
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Re: Using broad-spectrum weed killers on weeds that are competing with [#permalink]

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New post 12 Oct 2012, 07:08
Why is E wrong? If special seed treatment is for those plants whose seeds are cultivated,then this special seed treatment is ideal for them.

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Re: Using broad-spectrum weed killers on weeds that are competing with [#permalink]

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shreerajp99 wrote:
Why is E wrong? If special seed treatment is for those plants whose seeds are cultivated,then this special seed treatment is ideal for them.


The argument is about seeds that produce plants that are resistant to weed killers, but this resistance diminishes with time. So no weed killer can be used on them after a certain time, but something must be done with the weed. Therefore, it behooves plants that do something crucial before they lose their resistance to the weed killer: they're either cultivated quickly while they have their resistance, or get strong enough to fend for themselves agains the weed so that the weed problem is eliminated without the need to use the weed killer.

Answer choice E doesn't talk about any of this. It's irrelevant. The special...
Oh, I just realized what you are saying. E says the special seed treatment will be especially useful for *PLANTS* that are cultivated specifically for the seed *they produce* rather than for their leaves or roots. It's not talking about the treatment that's applied to the seeds. It's referring to the plants that have grown from those specially-treated seeds and the seeds that THOSE plants produce. Still irrelevant.

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Re: Using broad-spectrum weed killers on weeds that are competing with [#permalink]

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New post 08 Nov 2012, 03:25
Found it easy to pick C.
Thank you for the question.

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Re: Using broad-spectrum weed killers on weeds that are competing with [#permalink]

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Re: Using broad-spectrum weed killers on weeds that are competing with [#permalink]

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New post 05 Feb 2014, 09:08
Which of the following most logically completes the argument below?

The special seed treatment will be especially useful for plants that would not need the broad-spectrum weed killers for weeds as they mature...

only "C" PROVIDES THE CORRECT REASON.....
(C) provide, as they approach maturity, shade dense enough to keep weeds from growing



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Re: Using broad-spectrum weed killers on weeds that are competing with [#permalink]

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Hello from the GMAT Club VerbalBot!

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Re: Using broad-spectrum weed killers on weeds that are competing with [#permalink]

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New post 24 Apr 2016, 13:24
Hello from the GMAT Club VerbalBot!

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Re: Using broad-spectrum weed killers on weeds that are competing with [#permalink]

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New post 05 Jun 2016, 03:06
The question stimulus mentions:
For at least some food crops, specially treated seed that produces plants resistant to weed killers is under development. This resistance wears off as the plants mature. Therefore, the special seed treatment will be especially useful for plants that ......

So we must search for an answer that would mention that the plant / crop can survive on its own without weeds after maturing which is exactly what C does hence C is the right answer.

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Re: Using broad-spectrum weed killers on weeds that are competing with [#permalink]

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New post 13 Jul 2016, 02:54
The correct Answer is C

Weed Killer only kills weed, but it can't kill crop because when the crop is small and young
Weed killer can kill both weed as well as mature crop.
But then how to kill weed growing with mature crop. .
Because if we apply killer then it will kill both weed and mature crop. SO we cannot apply WEED-KILLER, once the CROP is mature.

Ummm.... How about a mature crop that itself stops weeds from growing.
EXCELLENT:- Can Mature Crop do that.. YES.. Weeds need sunlight to grow , if the CROP can block the sunlight, then weed will die.

What option says that:-
(C) Plants that provide, as they approach maturity, shade dense enough to keep weeds from growing.



betterscore wrote:
Which of the following most logically completes the argument below?

Using broad-spectrum weed killers on weeds that are competing with crops for sunlight, water, and nutrients presents a difficulty: how to keep the crop from being killed along with the weeds. For at least some food crops, specially treated seed that produces plants resistant to weed killers is under development. This resistance wears off as the plants mature. Therefore, the special seed treatment will be especially useful for plants that _____________ .

(A) produce their crop over an extended period of time, as summer squash does
(B) produce large seeds that are easy to treat individually, as corn and beans do
(C) provide, as they approach maturity, shade dense enough to keep weeds from growing
(D) are typically grown in large tracts devoted to a single crop
(E) are cultivated specifically for the seed they produce rather than for their leaves or roots

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Re: Using broad-spectrum weed killers on weeds that are competing with [#permalink]

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here is my approach
use weed killer is difficult, because both the weed and crop will die if use weed killer.
but, here's a good news, a special treated seed that help plant/crop resistant to weed killer, great, we can use weed killer when plant grow.
while, the special treated seed will wear off when crop mature, then here is a risk that weed start grow if special treated seed wear off.
how to conquer the issue, if we have a sort of plant/crop that can prevent weed growing when plant/crop mature.
how to? prevent weeds getting sunlight, water, nutrient.

C got it.

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Re: Using broad-spectrum weed killers on weeds that are competing with [#permalink]

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New post 22 Oct 2016, 03:28
betterscore wrote:
Which of the following most logically completes the argument below?

Using broad-spectrum weed killers on weeds that are competing with crops for sunlight, water, and nutrients presents a difficulty: how to keep the crop from being killed along with the weeds. For at least some food crops, specially treated seed that produces plants resistant to weed killers is under development. This resistance wears off as the plants mature. Therefore, the special seed treatment will be especially useful for plants that _____________ .

(A) produce their crop over an extended period of time, as summer squash does
(B) produce large seeds that are easy to treat individually, as corn and beans do
(C) provide, as they approach maturity, shade dense enough to keep weeds from growing
(D) are typically grown in large tracts devoted to a single crop
(E) are cultivated specifically for the seed they produce rather than for their leaves or roots


Ok, lets break down the stimulus:
- it hard to focus the weed killers in areas in which we have a competition for: sun, water, nutrients.
- Seeds that will produce plants with short term strong ammunity to week killers are being developed.
- Conclusion: The treatment will be especially good for...?

-> well, the treatment is against weeds, so it will be especially good in an environment in which you have a lot of weeds, or for plants that grow for short periods of time.

prethink:
- Where will we have a lot of weeds?
- In an area with a lot of competition - > lack of sun, water, or nutrients.

Answer choice C hits the spot.

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Re: Using broad-spectrum weed killers on weeds that are competing with [#permalink]

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New post 15 Apr 2017, 02:30
betterscore wrote:
Which of the following most logically completes the argument below?

Using broad-spectrum weed killers on weeds that are competing with crops for sunlight, water, and nutrients presents a difficulty: how to keep the crop from being killed along with the weeds. For at least some food crops, specially treated seed that produces plants resistant to weed killers is under development. This resistance wears off as the plants mature. Therefore, the special seed treatment will be especially useful for plants that _____________ .

(A) produce their crop over an extended period of time, as summer squash does
(B) produce large seeds that are easy to treat individually, as corn and beans do
(C) provide, as they approach maturity, shade dense enough to keep weeds from growing
(D) are typically grown in large tracts devoted to a single crop
(E) are cultivated specifically for the seed they produce rather than for their leaves or roots


Source : OG2017, CR609, P529

Weed Killers
 
Step 1: Identify the Question

The question stem appears before the argument and the argument contains a blank line at the end, signaling a Fill in the Blank structure. These types of arguments are most often Strengthen questions but can also be Inference or Find the Assumption questions.

In this case, the structure Therefore, the treatment will be useful for plants that ______ indicates that this is an Inference question. The argument is asking you to complete the conclusion of the argument.

Step 2: Deconstruct the Argument

BSWK diff: kill weeds, not crop?
Some foods: seeds à resistant to WK
BUT wears off over time
SO useful for plants that…?
You’re a farmer. Based on what you know so far, when would you want to use this special treatment? Perhaps on plants that mature really quickly, so that they’re ready to harvest before the resistance wears off?

(Note: that possibility does not turn out to be the focus of the correct answer, but if you do brainstorm something, note it. Sometimes, you’ll realize that you’ve just anticipated the correct answer!)

Step 3: Pause and State the Goal

Inference questions are asking you to find a conclusion that must be true given the information in the argument. Think of yourself as a scientist: what can you scientifically conclude from the given information? (Don’t follow “real-world” principles, where it would be enough to say something is likely to be true. That’s not good enough on the GMAT.)

Step 4: Work from Wrong to Right

(A) This choice is the opposite of what you want, according to the argument. The resistance wears off over time, so a crop that takes a long time to mature is not a good candidate for this special treatment.
(B) The argument doesn’t indicate that the treatment is better if you can treat the seeds individually vs. in a big pile of seeds. Both methods might be equally effective (or it might even be better to be able to treat a big pile of seeds at once!).
(C) CORRECT. The argument mentions one major drawback to the special treatment: it wears off as the crops mature. If certain crops naturally deter weeds by providing dense shade as they mature, then these crops have another method to counteract weeds just at the point that the special resistance is wearing off. These types of crops combat the one drawback to the special treatment.
(D) The argument does not indicate whether it is better to have crops that are grown in relative isolation.
(E) The argument does not indicate that the treatment works better depending on whether the harvesting of the crop is focused on seeds (for instance, sunflower seeds), leaves (for instance, lettuce), or roots (for instance, beets or carrots).
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Re: Using broad-spectrum weed killers on weeds that are competing with [#permalink]

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New post 18 Oct 2017, 08:09
betterscore wrote:
Which of the following most logically completes the argument below?

Using broad-spectrum weed killers on weeds that are competing with crops for sunlight, water, and nutrients presents a difficulty: how to keep the crop from being killed along with the weeds. For at least some food crops, specially treated seed that produces plants resistant to weed killers is under development. This resistance wears off as the plants mature. Therefore, the special seed treatment will be especially useful for plants that _____________ .

(A) produce their crop over an extended period of time, as summer squash does
(B) produce large seeds that are easy to treat individually, as corn and beans do
(C) provide, as they approach maturity, shade dense enough to keep weeds from growing
(D) are typically grown in large tracts devoted to a single crop
(E) are cultivated specifically for the seed they produce rather than for their leaves or roots


Although this is a 600-level question, I need a lot of time to understand the reasoning :cry: :cry: :cry:

However, the answer is C because we talked about the special plant that strong until mature. After it matures, the effect of the special seed is GONE.
Therefore, why we can still use it? We can use it for a type of plant that after mature still provide enough protection from weeds.

Other options do not talk specifically about the WEED.
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Re: Using broad-spectrum weed killers on weeds that are competing with   [#permalink] 18 Oct 2017, 08:09
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