The correct answer would be, Districts are especially useful in Rural Areas.
Explanation:
Districts are the small places. We can say districts are the small parts of the cities of a country. Districts are usually characterized by some feature. For example, a district is important due to the mango forests in that district, or a district is important due to the Coal reserves in that district.
Specialized services are granted to the people of specialized districts living within a particular geographic area. The specialized districts can be like School Districts, Water Districts, Petroleum District, Coal District, Minerals District, etc.
Rural areas are the under developed, mostly agricultural areas, where majority of the people lives in villages. There are no such facilities like that present in the Urban areas. So specialized districts are always useful in those under developed areas. For example, a water district will help the people of that specific district with the provision of clean drinking water.
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