Final answer:
The judicial branch is best described as a network of courts that administers justice at various levels, including the federal and state court systems, with the Supreme Court at the apex, interpreting laws and determining constitutionality.
Step-by-step explanation:
The best statement to describe the judicial branch is that justice is administered through many levels of the court system which includes local, state, and federal courts. The judiciary interprets laws and has the task of determining whether a law has been violated, and whether it is constitutional, following the foundational law of the country. The federal court system, established by Congress, includes the U.S. Supreme Court at the top, appellate courts, and trial courts, which handle a variety of cases. While state court systems are similar, they have differences, such as the election of judges in some states like Michigan and varying terms for justices. The Supreme Court has a unique role in this structure and holds the final say on constitutional issues, with justices appointed for life by the President and confirmed by the Senate, aiming to ensure political independence.