The correct answer is A) court of appeals.
If people want to challenge the decision of a trial court, they can request the case to be heard next by the court of appeals.
In the judicial system of the United States, there are 13 Court of Appeals. There are 12 regional circuits with 94 federal judicial districts. Each of these 12 regional circuits has a court of appeals. These courts of appeals revise the cases to determine if they were decided correctly and if the nature of the law was applied well.
The other options of the question were B) highest court. C) Supreme Court. D) trial court.