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# Last year, David tested a product called Mega-Grow in his garden by

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Last year, David tested a product called Mega-Grow in his garden by  [#permalink]

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30 Aug 2018, 06:44
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15% (low)

Question Stats:

79% (01:10) correct 21% (01:19) wrong based on 107 sessions

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Last year, David tested a product called Mega-Grow in his garden by applying the product to several different plants, all of which thrived as a result. When he applied Mega-Grow to the very same plants this year, however, several withered immediately.

Which of the following, if true, most helps to explain the reason for the results described above?

(A) Last year, David applied significantly more Mega-Grow than the product’s directions advised.
(B) Mega-Grow was recently taken off the market.
(C) Mega-Grow’s ingredients were modified significantly two years ago.
(D) Mega-Grow contains insecticides which can be applied without risk of toxicity to plants no more than once in any fifteen-month period.
(E) Mega-Grow is generally more effective when used in dry climates.

Source - powerscore bible

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Re: Last year, David tested a product called Mega-Grow in his garden by  [#permalink]

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30 Aug 2018, 06:55
aragonn wrote:
Last year, David tested a product called Mega-Grow in his garden by applying the product to several different plants, all of which thrived as a result. When he applied Mega-Grow to the very same plants this year, however, several withered immediately.

Which of the following, if true, most helps to explain the reason for the results described above?

(A) Last year, David applied significantly more Mega-Grow than the product’s directions advised.

(B) Mega-Grow was recently taken off the market.

(C) Mega-Grow’s ingredients were modified significantly two years ago.

(D) Mega-Grow contains insecticides which can be applied without risk of toxicity to plants no more than once in any fifteen-month period.

(E) Mega-Grow is generally more effective when used in dry climates.

Source - powerscore bible

A. If he applied more than directions advised and his plants thrived then this doesn't explain bad results for this year
B. Out of scope
C. He used last year and modifications were made before he used
D. Correct. He apllied Mega-Grow two times in 12 months and this imposed risk of toxicity
E. We don't know about climate changes
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Re: Last year, David tested a product called Mega-Grow in his garden by  [#permalink]

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30 Aug 2018, 08:18
How do you know they both fell within the 15 month period?
Maybe it was Jan of last year and the 2nd time was November of this year

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Re: Last year, David tested a product called Mega-Grow in his garden by  [#permalink]

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30 Aug 2018, 08:50
Only two contenders D and E. But E speaks about climate changes and in passage climate change is not mentioned. So answer is E.
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Re: Last year, David tested a product called Mega-Grow in his garden by  [#permalink]

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30 Aug 2018, 09:03
Quote:
Only two contenders D and E. But E speaks about climate changes and in passage climate change is not mentioned. So answer is E.

ammuseeru

I guess You meant answer is D right?
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Re: Last year, David tested a product called Mega-Grow in his garden by  [#permalink]

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30 Aug 2018, 09:14
gmat1393 wrote:
Quote:
Only two contenders D and E. But E speaks about climate changes and in passage climate change is not mentioned. So answer is E.

ammuseeru

I guess You meant answer is D right?

Yeah, thanks for correcting me. Answer is D :D
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Last year, David tested a product called Mega-Grow in his garden by  [#permalink]

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30 Aug 2018, 09:26
aragonn wrote:
Last year, David tested a product called Mega-Grow in his garden by applying the product to several different plants, all of which thrived as a result. When he applied Mega-Grow to the very same plants this year, however, several withered immediately.

Which of the following, if true, most helps to explain the reason for the results described above?

Source - powerscore bible

Its an easy-peasy "explain" question

Prompt - Last year positive results > this year negative results
Missing Info- Reason for this deviation
Goal - Any statement which can bridge the gap between the two outcomes of the same product

(A) Last year, David applied significantly more Mega-Grow than the product’s directions advised. - Easy out no. 1, prompt does not say anything about the amount of MG applied. Way out of Focus

(B) Mega-Grow was recently taken off the market.- Easy out no. 2, Out of Focus- how does a situation that a product is taken off the market can possibly explain the different results of the product on plants. For all we know it may have been taken out because the product was not profitable. This option requires extra layer of assumption to bridge the gap- by assuming that this may have been taken off the market because the product expires very soon(couple of days) and hence the expired product showed -ve result. Discard this option

(C) Mega-Grow’s ingredients were modified significantly two years ago. - Easy out no. 3, what does the product modification has to do with the results shown by product in hand

(D) Mega-Grow contains insecticides which can be applied without risk of toxicity to plants no more than once in any fifteen-month period.- Bingo! if applied in a year can show -ve results because it can toxify the plants

(E) Mega-Grow is generally more effective when used in dry climates.- Statistical runner up! see how this option cleverly wraps the info. and make one believe that the result may have varied because of the use in arid climate. It is wrong for 2 reasons- A. What if David applied the product to plants in the same weather as he did so last year & B. How do we know from the prompt that the product is suitable only in dry climate. Discard it

Our winner option D
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Last year, David tested a product called Mega-Grow in his garden by   [#permalink] 30 Aug 2018, 09:26
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