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Manager
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7 of 7 [#permalink] New post 22 May 2005, 18:02
7. Agricultural societies cannot exist without staple crops. Several food plants, such as kola and okra, are known to have been domesticated in western Africa, but they are all supplemental, not staple, foods. All the recorded staple crops grown in western Africa were introduced from elsewhere, beginning, at some unknown date, with rice and yams.
Therefore, discovering when rice and yams were introduced into western Africa would establish the earliest date at which agricultural societies could have arisen there.

Which of the following is an assumption on which the argument depends?
A. People in western Africa did not develop staple crops that they stopped cultivating once rice and yams were introduced.
B. There are no plants native to western Africa that, if domesticated, could serve as staple food crops.
C. Rice and yams were grown as staple crops by the earliest agricultural societies outside of western Africa.
D. Kola and okra are better suited to growing conditions in western Africa than domesticated rice and yams are.
E. Kola and okra were domesticated in western Africa before rice and yams were introduced there.
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 [#permalink] New post 22 May 2005, 19:00
A
People in western Africa did not develop staple crops that they stopped cultivating once rice and yams were introduced.

negating this option would mean that there were staple crops before rice and yam were introduced - therefore the conclusion that knowing the date of introduction of rice and yam would determine the earliest date of agri. societies will fall apart.
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 [#permalink] New post 23 May 2005, 03:24
I prefer C is more direct. The link that is missing is Rice and Yams are considered as staple foods.
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 [#permalink] New post 23 May 2005, 04:34
I would prefer C
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 [#permalink] New post 23 May 2005, 04:56
I will go with A

C - If there where some other staple crop grown in Western Africa before the introduction of Rice & yams, 'c' will not tell us when agricultural socities where established
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 [#permalink] New post 23 May 2005, 05:14
A for me too...,
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 [#permalink] New post 23 May 2005, 06:03
A for me too...,
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 [#permalink] New post 23 May 2005, 08:21
I will also take A.
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 [#permalink] New post 23 May 2005, 09:27
C cannot be right, it's out of scope.

A is my pick..
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 [#permalink] New post 23 May 2005, 14:30
A.

C is wrong imo since the argument is about ag societies in Western Africa
  [#permalink] 23 May 2005, 14:30
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