Which of the following courts do not have jurisdiction over original cases?

Appellate courts focus on reviewing decisions made by lower courts rather than hearing original cases. Their primary function is to evaluate whether the law was applied correctly in previous rulings and to correct any errors that may have occurred during the trial process. This means they do not have original jurisdiction, which is the authority to hear a case for the first time; instead, they operate by reviewing appeals from trial court decisions.

Trial courts and the Supreme Court, under certain circumstances, can have original jurisdiction. Trial courts typically hear a range of cases, including civil and criminal, making them the primary venue for original cases. The Supreme Court can also have original jurisdiction in specific types of cases, such as disputes between states or cases involving ambassadors, although much of its work involves appellate review. Therefore, the jurisdiction of appellate courts is distinct in that it is limited strictly to examining existing rulings, which is why this is the correct answer.