In New York City in the 1920s,sewage-carried pathogenic diseases were primarily prevented by

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In the 1920s, the prevention of sewage-carried pathogenic diseases in New York City was primarily achieved through the central collection and treatment of human sewage. The city had implemented a comprehensive sewage system that collected wastewater and transported it to treatment plants before releasing it into the waterways. This helped to reduce the spread of waterborne diseases such as cholera and typhoid fever. The other options (A, B, and C) were not commonly used measures to prevent sewage-carried diseases during this time period.

In New York City in the 1920s,sewage-Carried Pathogenic Diseases Were