Final answer:
The state's authority to enact legislation to protect the public is passed through police power. This power allows the state to regulate public safety, health, and welfare.
Step-by-step explanation:
The state's authority to enact legislation to protect the public is passed through police power. This power allows the state to regulate public safety, health, and welfare. For example, the state can pass laws to ensure public order, prevent crimes, and enforce traffic regulations. This authority is then extended to municipalities and counties, allowing them to enact laws and regulations to uphold public safety and welfare within their jurisdiction.