Final answer:
The U.S. Court of Appeals Judge would be most likely to become a Supreme Court Judge.
Step-by-step explanation:
The candidate who would be most likely to become a Supreme Court Judge is the U.S. Court of Appeals Judge. This is because Supreme Court Justices are typically selected from federal courts of appeals or other federal judgeships. The U.S. Court of Appeals Judge has experience at the federal level, which aligns with the qualifications and experience needed for a Supreme Court Judge.
Learn more about Appointment of Supreme Court Justices