a reason that many city workers lived in unhealthy conditions was\nthere was no garbage collection or sewage…

a reason that many city workers lived in unhealthy conditions was\nthere was no garbage collection or sewage service.\npeople from rural areas introduced new diseases.\nlandlords were not allowed to improve their buildings.\npeople often did not clean up after themselves.

a reason that many city workers lived in unhealthy conditions was\nthere was no garbage collection or sewage service.\npeople from rural areas introduced new diseases.\nlandlords were not allowed to improve their buildings.\npeople often did not clean up after themselves.

Answer

Brief Explanations:

Lack of garbage - collection or sewage service means waste accumulates, creating unhygienic conditions. This is a common reason for unhealthy living environments for city workers. Other options like new diseases from rural areas, landlords not being allowed to improve buildings, or people not cleaning up are less directly related to the overall unhygienic living conditions caused by lack of waste - management services.

Answer:

there was no garbage collection or sewage service.