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The current sharp decline in commercial honeybee popula

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The current sharp decline in commercial honeybee popula  [#permalink]

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New post 19 Aug 2018, 01:11
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A
B
C
D
E

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Question Stats:

73% (01:58) correct 27% (02:05) wrong based on 145 sessions

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The current sharp decline in commercial honeybee populations has been attributed to the same viral and bacterial infections, pesticide poisonings, and mite infestations that devastated bees in the past. Whichever of these adverse conditions is the immediate cause, it is highly likely that there is also a long-ignored underlying condition, and that is inbreeding. Decades of breeding practices meant to maximize pollinating efficiency have limited honeybees' genetic diversity.

Which one of the following is an assumption that is required by the argument?

(A) Commercial honeybees are more vulnerable to problems with inbreeding than wild honeybees are.

(B) The results of decades of breeding practices cannot be quickly undone.

(C) The genetic diversity of the honeybee population continues to decline.

(D) In the past, viral infections and mites have devastated genetically diverse honeybee populations.

(E) Lack of genetic diversity can make honeybees more vulnerable to adverse conditions.

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Re: The current sharp decline in commercial honeybee popula  [#permalink]

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New post 19 Aug 2018, 22:51
Conclusion : it is highly likely that there is also a long-ignored underlying condition, and that is inbreeding. Decades of breeding practices meant to maximize pollinating efficiency have limited honeybees' genetic diversity.

(A) Commercial honeybees are more vulnerable to problems with inbreeding than wild honeybees are.
Wild honeybees are out of context. but I kept this option in 1st pass as it does say about commercial honeybees.

(B) The results of decades of breeding practices cannot be quickly undone.
--Passage is not talking about undoing things. Out

(C) The genetic diversity of the honeybee population continues to decline.
--Already stated in passage. so out.

(D) In the past, viral infections and mites have devastated genetically diverse honeybee populations.
Okay, but now we know inbreeding is the reason. not an required assumption. so out.

(E) Lack of genetic diversity can make honeybees more vulnerable to adverse conditions.
Yes. This makes more sense than A. We know inbreeding is the cause. So we are assuming that because of lack genetic
diversity, bees are not sustaining bad conditions.
If they could sustain bad conditions, less genetic diversity would not be a problem.


Hence E is the required assumption.
GMAT Club Bot
Re: The current sharp decline in commercial honeybee popula &nbs [#permalink] 19 Aug 2018, 22:51
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The current sharp decline in commercial honeybee popula

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