Explanation:

- The court system of a country or state refers to the network of courts and judicial officers responsible for administering justice.

- Option 1: Code

- Typically refers to a set of laws or regulations.

- Option 2: Judiciary

- This is correct. It refers to the system of courts and judges collectively administering justice.

- Option 3: Efficiency

- Often relates to effectiveness and productivity, not specific to courts or judges.

- Option 4: Procedural Due Process

- Relates to the legal requirement that the state must respect all legal rights owed to a person, a specific legal principle.