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13 Apr 2020, 02:16
Kudos
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A
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
55%
(hard)
Question Stats:
66% (02:28) correct
34%
(02:43)
wrong
based on 749
sessions
History
Date
Time
Result
Not Attempted Yet
The local agricultural official gave the fruit growers of the District 10 Farmers Cooperative a new pesticide that they applied for a period of three years to their pear orchards in place of the pesticide they had formerly applied. During those three years, the proportion of pears lost to insects was significantly less than it had been during the previous three-year period. On the basis of these results, the official concluded that the new pesticide was more effective than the old pesticide, at least in the short term, in limiting the loss of certain fruit to insects.
Each of the following, if true, weakens the official’s argument EXCEPT:
(A) The amount of fruit that an orchard can potentially produce depends in part on how many mature trees it contains, and the number of mature pear trees in District 10 has declined steadily over the past eight years.
(B) During the past five years, the farmers of the District 10 Farmers’ Cooperative have been gradually implementing a variety of insect-abatement programs, and some of these programs have proven successful.
(C) Over the past five years, one of the several species of birds that typically prey on the insects that feed on pears has gradually shifted its migratory patterns, spending more and more months each year in the region that contains District 10.
(D) Some of the species of insects in District 10 that infest pear trees are water breeders, and the reservoirs and marshlands in this district have been shrinking rapidly over the past three years.
(E) The effects of certain pesticides, including the pesticide that had formerly been used in District 10, are cumulative and persist for several years after the pesticide is no longer applied.
14 Apr 2020, 00:34
Kudos
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The local agricultural official gave the fruit growers of the District 10 Farmers Cooperative a new pesticide that they applied for a period of three years to their pear orchards in place of the pesticide they had formerly applied. During those three years, the proportion of pears lost to insects was significantly less than it had been during the previous three-year period. On the basis of these results, the official concluded that the new pesticide was more effective than the old pesticide, at least in the short term, in limiting the loss of certain fruit to insects.
Stimulus: the local official gave fruit growers of the district 10 a new pesticide to try for 3 years and it was found that in those 3 years the new pesticide less pears were lost to insects. On the basis of this the officials concluded that the new pesticide was more effective than old one.
Each of the following, if true, weakens the official’s argument EXCEPT:
(A) The amount of fruit that an orchard can potentially produce depends in part on how many mature trees it contains, and the number of mature pear trees in District 10 has declined steadily over the past eight years. irrelevant doesnot help to infer that the old pesticide was not better than the new one
(B) During the past five years, the farmers of the District 10 Farmers’ Cooperative have been gradually implementing a variety of insect-abatement programs, and some of these programs have proven successful. irrelevant doesnot help to infer that the old pesticide was not better than the new one
(C) Over the past five years, one of the several species of birds that typically prey on the insects that feed on pears has gradually shifted its migratory patterns, spending more and more months each year in the region that contains District 10. irrelevant does not help to infer that the old pesticide was not better than the new one
(D) Some of the species of insects in District 10 that infest pear trees are water breeders, and the reservoirs and marshlands in this district have been shrinking rapidly over the past three years. irrelevant doesnot help to infer that the old pesticide was not better than the new one
(E) The effects of certain pesticides, including the pesticide that had formerly been used in District 10, are cumulative and persist for several years after the pesticide is no longer applied.
Correct. helps to infer that the old pesticide was working with new one and so the count of pesticides was low and not because the new pesticide was better than old one
Stimulus: the local official gave fruit growers of the district 10 a new pesticide to try for 3 years and it was found that in those 3 years the new pesticide less pears were lost to insects. On the basis of this the officials concluded that the new pesticide was more effective than old one.
Each of the following, if true, weakens the official’s argument EXCEPT:
(A) The amount of fruit that an orchard can potentially produce depends in part on how many mature trees it contains, and the number of mature pear trees in District 10 has declined steadily over the past eight years. irrelevant doesnot help to infer that the old pesticide was not better than the new one
(B) During the past five years, the farmers of the District 10 Farmers’ Cooperative have been gradually implementing a variety of insect-abatement programs, and some of these programs have proven successful. irrelevant doesnot help to infer that the old pesticide was not better than the new one
(C) Over the past five years, one of the several species of birds that typically prey on the insects that feed on pears has gradually shifted its migratory patterns, spending more and more months each year in the region that contains District 10. irrelevant does not help to infer that the old pesticide was not better than the new one
(D) Some of the species of insects in District 10 that infest pear trees are water breeders, and the reservoirs and marshlands in this district have been shrinking rapidly over the past three years. irrelevant doesnot help to infer that the old pesticide was not better than the new one
(E) The effects of certain pesticides, including the pesticide that had formerly been used in District 10, are cumulative and persist for several years after the pesticide is no longer applied.
Correct. helps to infer that the old pesticide was working with new one and so the count of pesticides was low and not because the new pesticide was better than old one
30 Apr 2020, 12:19
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Bunuel
Even though the no of mature trees is declined but output is more or loss is significantly less that means the new pesticide is more effective .hence the option A is strengthening the argument , not weakening . Therefore it is the correct answer.
