Which of the following powers belongs to the federal government?

The power to print money belongs to the federal government because it is a fundamental aspect of managing the nation’s economy and monetary system. This authority is granted by the U.S. Constitution, which places the responsibility for issuing currency and regulating its value firmly within the federal realm, specifically under the jurisdiction of the U.S. Department of the Treasury and the Federal Reserve System. This power is crucial for establishing a uniform currency across all states, ensuring economic stability and facilitating trade.

In contrast, the regulation of marriage laws, the provision of public safety, and the establishment of education systems are typically powers reserved for individual states. Each state has the authority to set its own laws regarding marriage, determine how safety is managed within its borders, and create its own educational systems. These areas fall under the states' rights, as per the Tenth Amendment of the Constitution, which reserves powers not delegated to the federal government for the states. Thus, the ability to print money is a distinctive characteristic of federal authority, making it the correct answer in this context.