If someone refers to the nation's highest law, he or she is referring to

A) administrative law.
B) the U.S. Constitution
C) case law.
D) state constitutions.

U.S. Constitution

The supreme law of the United States, embodying fundamental principles and establishing the national government's structure, functions, and powers.

Administrative Law

A branch of public law that governs the activities of administrative agencies of government, including rulemaking, adjudication, or the enforcement of a specific regulatory agenda.

Case Law

Legal principles developed through decisions in court cases rather than statutes.