OG-163

163. An overly centralized economy, not the changes in the climate, is responsible for the poor
agricultural production in Country X since its new government came to power. Neighboring
Country Y has experienced the same climatic conditions, but while agricultural production
has been falling in Country X, it has been rising in Country Y.
Which of the following, if true, would most weaken the argument above?
(A) Industrial production also is declining in Country X.
(B) Whereas Country Y is landlocked, Country X has a major seaport.
(C) Both Country X and Country Y have been experiencing drought conditions.
(D) The crops that have always been grown in Country X are different from those that have
always been grown in Country Y.
(E) Country X’s new government instituted a centralized economy with the intention of ensuring an equitable distribution of goods.

D是他因，B能不能也算是一种他因，只是联系不如D紧密而以？

谢谢。