Read the following passage and answer the question:
'Urban gardening has burgeoned in recent years, not merely as a hobby, but as a crucial movement towards sustainable living. These small-scale plots, whether on rooftops, balconies, or in community spaces, contribute significantly to local food security. They reduce food miles—the distance food is transported from where it is grown to where it is consumed—which in turn lowers carbon emissions. Furthermore, these green spaces improve air quality, mitigate the urban heat island effect, and provide vital habitats for pollinators like bees and butterflies. The community-building aspect is also profound, as shared gardens foster social interaction and a collective sense of purpose.'
What is the primary purpose of this passage?
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A
To provide a step-by-step guide on how to start an urban garden.
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B
To argue that urban gardening is a superior method of food production compared to rural farming.
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C
To highlight the diverse environmental and social benefits of urban gardening.
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D
To analyze the economic costs associated with establishing community gardens.