The correct answer is B) the U.S. Constitution.
U.S. District Courts, U.S. Circuit Courts of Appeals, and the U.S. Supreme Court have their power instilled by the U.S. Constitution.
In Article III, sections 1 and 2 of the US Constitution, you can find the arguments that refer to the Supreme court system in the United States. All cases involving the constitutionality of the law are heard by the federal courts. Other important cases it hears are the disputes states, bankruptcy cases, maritime law, and laws regarding foreign treatises controversies.
