Which describes a human cost of industrialization?

Well "human cost" means that people will be harmed and/or killed and in this case it's talking about people being harmed due to industrialization. A good topic to bring up would be the deplorable and unsafe conditions of many of the factories, and the increased use of child labor, all of this lead to workplace accidents becoming more common. So the death and injury of workers due to unsafe working conditions would definitely be a human cost of industrialization.