Von Thünen's 1826 model of agricultural land use assumed that the city is located centrally within an “isolated state”. What does the second (blue, 2 to 5 km) area correspond to?
(A) dairy and market gardening
(B) forestry for fuel
(C) grains and field crops
(D) ranching
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統計: A(5), B(5), C(0), D(2), E(0) #2137001
統計: A(5), B(5), C(0), D(2), E(0) #2137001