According to the work of Nobel Prize winner Elinor Ostrom: a. All goods need to be privatized (sold in private markets) for them to be efficiently produced. b. In the right setting, social norms can maintain private voluntary cooperation and prevent issues like the tragedy of the commons and free rider problem c. Government intervention in the form of regulation (command and control) is the only way to overcome the tragedy of the commons d. There is no way to prevent a tragedy of the commons as both voluntary cooperation and government regulation will ultimately fail