Which of the Following Statements Best Illustrates the "Tragedy of the Commons

Multiple Choice

Which of the following statements best illustrates the "tragedy of the commons?"

A) A factory pollutes a river as much as the law allows.
B) Some levels of pollution are life threatening.
C) Some activities harm the environment, but others do not.
D) Irrigated cropland can be ruined by salinization.
E) Cropland can decrease biodiversity.