The correct answer to this open question is the following.
Although there are no options attached, we can say the following.
Matters of national supremacy were handled under the federal constitution in the following way. The national government is supreme in its legitimate areas of power and authority under the supremacy clause.
Let's have in mind that during the Constitutional Convention of 1787, held in Philadelphia, Pennsylvania, the delegates debated about the kind of government needed for the United States after the many problems that surged under the Articles of Confederation. Delegates debated and argued about the positions of Federalists and Antifederalists.