Final answer:
Government regulation in a mixed-market economy aims to protect consumers, ensure competition, and provide public goods and services.
Step-by-step explanation:
A purpose of government regulation in a mixed-market economy is to protect consumers, ensure fair competition, and uphold the rights of the public. In the role of protector, the government enforces laws to prevent businesses from taking unfair advantage of consumers. Practices like preventing fraudulent activities, establishing antitrust laws to foster competition, and enforcing legal contracts are essential to this protective role. Also, as a provider, the government supplies public goods and services, such as national defense and infrastructure, which are essential for a functional society. All these measures are taken to ensure that the mixed-market economy operates smoothly and equitably.