The economic motives for government intervention include defining and enforcing property rights, encouraging externalities, provision of public goods, and redressing market failures. These interventions aim to address specific issues in the economy to promote stability and efficiency. However, defining and enforcing property rights is not an economic motive for government intervention. Property rights are fundamental for a functioning market economy, but they are typically established and protected through legal systems rather than direct government intervention. Government intervention is more commonly focused on correcting market failures, such as addressing negative externalities or providing public goods that are not adequately provided by the private sector. These interventions help to ensure a fair and efficient allocation of resources in the economy. So, the correct answer is defining and enforcing property rights. 100 Words