The movement of a case from juvenile court to adult court for pretrial and/or trial proceedings is known as ______.

The movement of a case from juvenile court to adult court for pretrial and/or trial proceedings is referred to as "transfer." This process, also known as "waiver" or "certification," allows for certain juvenile offenders, typically those charged with more serious crimes, to be tried in an adult court system rather than in the juvenile court.

The transfer process takes into consideration several factors, including the age of the juvenile, the nature and severity of the offense, the juvenile's prior criminal history, and the potential for rehabilitation. This is a critical step, as the adult court system has different legal procedures and consequences compared to juvenile court, often resulting in harsher sentences.

In contrast, the other options do not pertain to the context of moving a case from juvenile to adult court. An appeal refers to seeking a review of a court’s decision by a higher court, extradition involves the formal surrender of a person charged with a crime from one jurisdiction to another, and a mandate is a judicial command, often issued by an appellate court, requiring a lower court to take a specific action.