Answer:
e) Federalism
Step-by-step explanation:
The text in the question reflects the principle of federalism.
The constitutional principle of federalism states that the United States is a perpetual union of individual states, that voluntarily give only some specific powers to a central, federal government.
The constitution says that the federal government only has those powers specifically stated by the constitution. These are the powers that individual states have submitted to the federal government.
Everything else, is left to the states. And the right to regulate public school is one of those things that are left to the states.