Answer:
The correct answer is D. The Supremacy Clause ensures that the U.S. Constitution overrules each state constitution.
Step-by-step explanation:
The Supremacy Clause provides for the Constitution and laws of the United States, as well as international treaties concluded by the United States, to be the supreme law of the country. This clause also obliges state judges to be governed by the US Constitution, laws, and international treaties, even if individual state constitutions and laws are contrary to federal law. State constitutions also recognize the supremacy of the US federal constitution. The Supremacy Clause is contained in Article VI of the US Constitution.