Final answer:
According to the Constitution, there are no specified qualifications for federal judges; their appointments, while life-lasting, require presidential nomination and Senate confirmation.
Step-by-step explanation:
The Constitution does not specify any particular qualifications such as being an attorney, reaching a certain age, or having judicial experience for federal judges, including those on the Supreme Court. The Constitution maintains silence on the personal qualifications needed to be a federal judge, implying that the choice is left to the discretion of the President and the confirmation power of the Senate. Notably, Article III of the Constitution establishes that federal judges, once appointed, hold their office during good behavior, which usually translates to a lifetime appointment, unless they resign, retire, are impeached, or pass away. The design of the Judicial Branch under Article III allows for an independent judiciary, with the selection process being led by the President followed by confirmation from the Senate.
Based on the information provided, the correct answer to the student's question is:
C. nothing about the qualifications of federal judges.