The first section of Article 6 of the United States Constitution delineates the doctrine of constitutional supremacy.
This section establishes the Constitution as the supreme law of the land. It declares that the Constitution, along with federal laws and treaties made under the authority of the United States, holds the highest legal authority, surpassing any conflicting provisions established by state laws or regulations.
This principle, known as the Supremacy Clause, underscores the foundational significance of the federal Constitution.
It asserts that federal law prevails over state laws when conflicts arise, emphasizing the unity of the nation and central authority while ensuring consistency in the application of laws across the country.
Additionally, this section mandates that all federal and state officials, including judges, must uphold the Constitution.
Elected officials and members of the judiciary are bound by oath or affirmation to support the Constitution, reinforcing the pivotal role of the federal Constitution in guiding the actions and decisions of the government at all levels.
Therefore, the correct answer is D: It discusses the supremacy of the Constitution and federal laws, establishing their paramount authority within the United States' legal framework.