Answer:
To hear certain kinds of cases, is the right answer.
Explanation:
Article III of the Constitution of the United States prepares the grounds for the practice of the federal court. The federal judiciary in the United States is run by nine judges, who are appointed for a life-time by the President of the United States. The Senate confirms the appointment of the nine judges and some of the lower courts. Jurisdiction gives federal courts the authority to hear certain kinds of cases.
