Answer:
The correct answer is 4. Federal law is supreme
Step-by-step explanation:
The Supremacy Clause (second clause of Article VI of the Constitution of the United States) establishes that federal law is supreme, that is, it sits above any state law, including state constitutions. This in essence means that when there's a conflict between federal and state laws, federal laws take priority. Out of the group of answers, this is the one that is more directly representative of the essence of the federalist system.