Until the 1960s, Stavanger was a quiet and peaceful town in Norway. Since the early 1960s, it has become the center of Norwegian offshore oil exploration; in the process, violent crime and the destruction of public property It has also increased sharply in Stavanger. Obviously, the root cause of these social problems lies in Stavanger's prosperity caused by oil. Which of the following, if it also occurred in the 1960s to the present, gives the strongest support for the above argument? ['Residents of Stavanger are not very sorry that their city has become a Norwegian offshore oil exploration center.', 'Norwegian sociologists are concerned about the dramatic increase in violent crime and destruction of public property in Stavanger.', 'Violent crime and destruction of public property have remained low in many Norwegian towns that have not flourished with oil.', 'Non-violent crime, drugs, divorce, increase in Stavanger as much as violent crime and destruction of public property.']