Option 1: Ordinary law refers to legislation passed by the legislative branch of government, not the judiciary. This option is not the correct answer.
Option 2: Case law refers to the body of law that is derived from judicial decisions, rather than legislation. The judiciary creates case law by interpreting and applying statutes, regulations, and other legal principles to individual cases. Therefore, this option is the correct answer.
Option 3: Rule of law is a foundational principle that states that all individuals and institutions are subject to and accountable to the law. It does not refer to a specific law made by the judiciary. Thus, this option is not the correct answer.
Option 4: Administrative law refers to the body of law that governs the activities and decision-making processes of administrative agencies. While the judiciary may play a role in interpreting and applying administrative law, it does not exclusively make this type of law. Therefore, this option is not the correct answer.
In conclusion, the correct answer to the question is option 2: Case law.