Which of the following enabled city dwellers of the late nineteenth and early twentieth centuries to live in greater comfort and safety?

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Indoor plumbing, central heating systems, and more efficient water-purification systems all helped to improve the living conditions of city dwellers by providing them with access to clean water and better sanitation, as well as more comfortable and safer living environments. The increased use of coal-burning stoves would have had the opposite effect by contributing to air pollution and potentially causing health problems. Pollution control legislation may have had some impact, but it likely would not have been as significant as the technological advancements in housing infrastructure. Government financing of low-income housing may have helped some individuals, but it would not have been as beneficial to the broader population.

Which of the Following Enabled City Dwellers of the Late