Assertion: Urban centres in India are more differentiated in terms of socioeconomic, politico-cultural and other indicators of development than any other areas.
Reasoning: At the top, there are farmhouses and high-income group localities characterised by well-developed urban infrastructures, at the other extreme of it are the slums, jhuggi-jhopari clusters and colonies of shanty structures.

Both Assertion (A) and reasoning (R) are correct and R is the correct explanation of A.

This may give the impression that urban centres exist as undifferentiated homogeneous entities in opposition to rural areas. On the contrary, urban centres in India are more differentiated in terms of the socioeconomic, politico-cultural and other indicators of development than any other areas. At the top, there are farmhouses and high-income group localities characterised by well-developed urban infrastructures, like wide roads, streetlights, water and sanitation facilities, lawns, well-developed green belts, parks, playgrounds and provisions for individual security and right to privacy. At the other extreme of it are the slums, jhuggi-jhopari clusters and colonies of shanty structures.