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A company plans to develop a prototype weeding machine that

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Re: prototype weeding machine [#permalink] New post 19 Jul 2010, 21:55
IMHO answer is D.
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Re: prototype weeding machine [#permalink] New post 24 Jul 2010, 14:12
D for me.

Genetic manipulation allows the plants to have a different color without altering the characterisitics of the plants. This what the company wants so that the weeding machine can distinguish the weeds from the plants based on its color.
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Re: prototype weeding machine [#permalink] New post 24 Jul 2010, 22:26
A is weakening. considerable degree of variation in shade of color between species means that weeding machine probably couldn't apply to all kinds of crops.
must be D
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Re: A company plans to develop a prototype weeding machine that [#permalink] New post 23 Mar 2012, 15:30
I have chosen D for this question:

It sounds like nobody posted the OA - it is D. This question is #51 in Verbal 2nd Edition.

This passage states that an inventor created a machine that would replace manual weeding, thereby reducing the labor costs.

A. This would actually weaken the argument. The reason is because if there is a large degree of variation in shade of color between weeds, it would be very tough for the machine to differentiate.

B. Again, this weakens the argument. If the color of some plants change over the course of the season, this would make it difficult for the machine to differentiate between a plant and a weed.

C. This describes something that the machine would not be able to do. Therefore, it weakens the argument.

D. This would support the argument. The reason is because manipulation of plants to a certain shade of color would allow the machine to be much more efficient. For example, if we manipulated the plants to be only dark green, then it becomes much easier for the machine to differentiate between plants and weeds.

E. This statement is irrelevant. Also, it suggests that labor costs would not be reduced because there are other agricultural duties that require attending.
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Re: A company plans to develop a prototype weeding machine that [#permalink] New post 23 Mar 2012, 20:10
I choose A,

Why would anyone want to breed weeds? Weeds are hazardous to plants & thus are removed. D just doesnt make sense for the company to launch their product
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Re: A company plans to develop a prototype weeding machine that [#permalink] New post 28 Mar 2012, 03:55
Looks like D it is..yes..please post the source...thanks..
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Re: A company plans to develop a prototype weeding machine that [#permalink] New post 19 Apr 2014, 08:03
A company plans to develop a prototype weeding machine that uses cutting blades with optical sensors and microprocessors that distinguish weeds from crop plants by differences in shade of color. The inventor of the machine claims that it will reduce labor costs by virtually eliminating the need for manual weeding.

Which of the following is a consideration in favor of the company’s implementing its plan to develop the prototype?

What is the reason for the invention?

A. There is a considerable degree of variation in shade of color between weeds of different species. - Irrelevant
B. The shade of color of some plants tends to change appreciably over the course of their growing season. - Change of colors to crop doesnt say the reason
C. When crops are weeded manually, overall size and leaf shape are taken into account in distinguishing crop plants from weeds. - Its tempting but still they ddint said anything about the toughness of the manual weeding depending on this.
D. Selection and genetic manipulation allow plants of virtually any species to be economically bred to have a distinctive shade of color without altering their other characteristics. - Genetic manipulation of plants by other species(our case weed), Hence the good reason among all to support the necessity of invention.
E. Farm laborers who are responsible for the manual weeding of crops carry out other agricultural duties at times in the growing season when extensive weeding is not necessary. - Out of scope
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Re: A company plans to develop a prototype weeding machine that [#permalink] New post 30 Jun 2014, 19:18
A company plans to develop a prototype weeding machine that uses cutting blades with optical sensors and microprocessors that distinguish weeds from crop plants by differences in shade of color. The inventor of the machine claims that it will reduce labor costs by virtually eliminating the need for manual weeding.

Which of the following is a consideration in favor of the company’s implementing its plan to develop the prototype?

prototype machine - distinguish weeds from crop plans by difference in color.
This will reduce costs.

We need to find answer choice that supports the claim.
any statement that removes the potential weakener related to color differentiation between weeds and crop is the correct answer choice.



A. There is a considerable degree of variation in shade of color between weeds of different species. - Incorrect. This is a weakener. We are looking statement that supports the claim.
B. The shade of color of some plants tends to change appreciably over the course of their growing season. - Incorrect. This is a weakener. We are looking statement that supports the claim.
C. When crops are weeded manually, overall size and leaf shape are taken into account in distinguishing crop plants from weeds. - Incorrect. This is again a weaken choice. It removes color as a parameter. so the plan will fail as the prototype depends on color to distinguish weeds from plants.
D. Selection and genetic manipulation allow plants of virtually any species to be economically bred to have a distinctive shade of color without altering their other characteristics. - Correct. This statement protects the argument against potential weakener. Hence, correct answer choice.
E. Farm laborers who are responsible for the manual weeding of crops carry out other agricultural duties at times in the growing season when extensive weeding is not necessary. - Incorrect. Irrelevant answer choice.
Re: A company plans to develop a prototype weeding machine that   [#permalink] 30 Jun 2014, 19:18
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