The correct answer is option 4. To qualify for appointment as a Judge of the Supreme Court, the following criteria are required:

1. At least five years as a Judge of a High Court: This means that the candidate must have served as a Judge in a High Court for a minimum of five years.

2. At least ten years as an Advocate of a High Court: This criterion states that the candidate must have worked as an Advocate in a High Court for at least ten years.

3. In the opinion of the President, a distinguished Jurist: This requirement gives the President the authority to appoint a person as a Judge of the Supreme Court if they are considered a distinguished Jurist. This means that the person must have a notable reputation and expertise in the field of law.

Option 4 is not required to be qualified for appointment as a Judge of the Supreme Court. It states that a candidate must have at least twenty years as a Sub-Judicial Magistrate. However, this criterion is not necessary for the appointment of a Judge to the Supreme Court.

Therefore, the correct answer is option 4.