Answer:
A. federal supremacy
Step-by-step explanation:
The term supremacy legally means highest authority. And Congress of the USA is the legislature of the federal government.
So this basically means that the Constitution gives the Congress ( the federal government) greter authority, the power to overrule State laws and actions, such is the case here, concerning Commerce.
Unlike this, implied powers denote powers that aren't explicitly given to Congress through the Constitution, but rather indirectly result from them.