Final Answer:
The black dot in the center of the image represents the city.
The correct option is 1.
Step-by-step explanation:
In von Thünen's model, the concentric rings represent different zones surrounding a central market or city. The central dot, depicted as black in the image, signifies the location of the city. According to von Thünen's theory, different land uses and agricultural activities are organized in rings or zones around the city based on transportation costs.
The area closest to the city center typically hosts high-value, perishable goods, like dairy and market gardening, due to lower transportation costs, while the outer rings are used for activities like field crops and livestock, which can bear higher transportation costs. Thus, the black dot signifies the central point of economic activity, which influences the organization of agricultural land use in von Thünen's model.
So, the correct option is 1.city.