Thank you for using the timer!
We noticed you are actually not timing your practice. Click the START button first next time you use the timer.
There are many benefits to timing your practice, including:
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.
Re: A company plans to develop a prototype weeding machine that [#permalink]
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.