How did zoning laws help to reduce the danger from pollution?
A.They required factories to limit their use of chemicals
B. They kept factories outside of residential neighborhoods
C. They relocated factories to rural areas of far away from cities
D. Establish building codes to reform factory plumbing
B. They kept factories outside of residential neighborhoods
Zoning laws helped to reduce the danger from pollution by separating industrial and residential areas, thereby preventing the exposure of residents to harmful pollutants emitted by factories. By keeping factories outside of residential neighborhoods, zoning laws limited the direct impact of pollution on the health and well-being of residents.