Prototype weeding machine!!! plz help

[amysky_0205]

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?

A.There is a considerable degree of variation in shade of color between weeds of different species.

B.The shade of color of some plants tends to change appreciably over the course of their growing season.

C.When crops are weeded manually, overall size and leaf shape are taken into account in distinguishing crop plants from weeds.

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.

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.

OA: D

can someone explain how to narrow down to the right answer?
tks

[Sk1ver]

Check this link https://www.beatthegmat.com/weeding-machine-t13900.html

[charu_mahajan]

We need to strengthen the inventor's claim that the machine will be a success and it will be able to differentiate between weed and crop by recognizing the difference in color.

I'm quite sure you would have quickly eliminated
B - It looks like a weakener.
C - We don't care!! Get out of our way
E - We don't care for this one either.

A - One will stop at first glance but have a closer look. It says that the weeds of different crops are of different color. Do we really care !! We are looking for something to establish the relationship between color of weed and plant.

D Says that we can possibly make a distinctive color for all plant species. If so be the case, we can make the color stand out without affecting any other characteristics of the plant. Our machine will be able to recognize this color and eliminate the weeds. Hence this strengthens the argument.

What do you say??