The power that is reserved to the states in the united states federal system is setting the legal driving age. The Option B is right.
What dictates reserved power to the states in U.S.?
In the United States, the powers of the federal government and the powers of the state governments are separated and defined by the Constitution. Powers not specifically delegated to the federal government by the Constitution are reserved for the states and the people. These are known as "reserved powers" or "states' rights."
The Tenth Amendment to the Constitution states that "The powers not delegated to the United States by the Constitution, nor prohibited by it to the States, are reserved to the States or to the people."
Examples of powers reserved to the states include:
- Regulating and licensing of businesses and professions
- Education
- Maintenance of highways and roads (except those that are part of the national highway system)
- Crime control and law enforcement
- Health and welfare programs
- Administration of elections
- Creation and enforcement of state laws.