A features of an Indoor plumbing is used in a typical of city tenement buildings.
What is a city tenement buildings?
A city tenement buildings are also called tenements and they have features that includes narrow and low-rise apartment buildings
Majority of the city tenement buildings have a major features of an indoor plumbing which supplies hot piped water, bathtub, flush toilet etc.
Hence, the city tenement buildings usually includes a Indoor plumbing.
Therefore, the Option D is correct.
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