Answer:
A. In a conflict between federal and state laws, the former will override the latter.
Step-by-step explanation:
The Supremacy Clause establishes that all federal laws are the supreme law of the land and therefore all states, federal officers and judges are bound by it. This means that if a state law is in conflict with federal law, it is the federal law that must prevail: Federal laws override state laws. By describing the relationship between federal and state power, this clause sets the root of the U.S. federalism.