Answer:
B. Uphold the constitutional law
Explanation:
This principle is held in the Supremacy Clause, of Article VI of the U.S. Constitution. According to the clause, all federal laws are the supreme law of the land and therefore all states, federal officers and judges are bound by it, meaning that in case of a conflict between state and federal laws, the federal laws is the one that will prevail. In the example, the judge must uphold the constitutional law.
