Answer:
The Supremacy Clause:
D. Makes the U.S. Constitution the highest law of the land.
Step-by-step explanation:
The Supremacy Clause is a term used to refer to the Article VI, Paragraph 2 of the U.S. Constitution. According to the Clause, the federal constitution and federal law in general are higher in a hierarchic level than the state constitutions and laws. That means no state law should conflict with the Constitution. State judges must also follow the federal Constitution, laws and treaties.
This is the text of Article VI, Paragraph 2:
This Constitution, and the Laws of the United States which shall be made in Pursuance thereof; and all Treaties made, or which shall be made, under the Authority of the United States, shall be the supreme Law of the Land; and the Judges in every State shall be bound thereby, any thing in the Constitution or Laws of any State to the Contrary notwithstanding.