Single-Industry Resource Towns Built Around Either Excavating Raw Materials Like

Multiple Choice

Single-industry resource towns built around either excavating raw materials like coal or lumber or transporting them by train tend to spring up suddenly.Many people move there to work for the company,and the rate of change is fast: one day there is a forest,the next,a growing town built around mobile homes in the bush.There are often few if any other things to do besides work.Rates of depression tend to be high.Which theoretical explanation for suicide would explain the higher rates of depression that can lead to suicide in places like this?

A) selection
B) psychological
C) contagion
D) ecological