The impact of the 1930s crisis on the different regions of Country X varied depending on the relationship of each region's economy to the international marketplace, with region A most drastically affected. Interestingly, demand in foreign markets for Region A's tropical crops was only slightly affected by the drop in income levels after 1929; the same was true of foreign demand for the temperate-zone basic foodstuffs produced by Region B. However, Region B was better able to survive the crisis, largely avoiding the economic damage suffered by Region A's economy. Which one of the following provides the most reasonable explanation for the fact that Region A's economy was more drastically effected by the slight decrease in demand than was Region B's?Foreign demand fell only slightly for both Region A’s tropical crops and Region B’s basic foodstuffs, but Region A’s economy suffered far more. So we need a reason why a small demand drop would hurt Region A much more than Region B.
(A) Tropical crops like those produced by Region A usually command higher prices on the world market than do basic foodstuffs like those produced by Region B.
Higher price does not explain higher vulnerability to a small demand drop. If anything, higher prices can mean higher margins, which could cushion a shock.
(B) Region B's economy was dependent on annual crops, the supply of which is easily adjusted because the plants are renewed each year, in contrast to the perennial crops grown in Region A.
This explains it well. If Region A grows perennial crops, it cannot cut supply quickly when demand dips, so even a small demand decrease can create oversupply and a big income hit. Region B can adjust next season.
This is the most reasonable explanation.(C) Because tropical goods are generally bought by more affluent consumers, demand for these products rarely declines even when overall income levels drop.
This tries to explain why demand stayed high, but the passage already says demand fell only slightly in both regions. It does not explain why Region A was hit harder.
(D) The temperate zone basic foodstuffs produced in Region B directly competed with similar crops produced by the countries that imported Region B's goods.
If anything, competition would make Region B
more exposed to demand changes, not better able to survive.
(E) Because Region B's economy was dependent on the export of basic foodstuffs, there was only a slight decline in demand for its goods even after income levels dropped.
This just repeats the given information and does not explain the different economic outcomes, so it is not an explanation.
Answer: (B)