Answer:
take the case to the United States Supreme Court
Explanation:
From the scenario given, it can be inferred that the case has been decided at the court of the first instance, which is the lower court.
Also, the court has been decided at the first appellate court, which is the court of appeals. Then If Wag's lawyer wants to appeal this decision, (, the decision of the court of appeal) he will " take the case to the United States Supreme Court."
This is because it is the Supreme Court that has jurisdiction over the appeal courts.
Note: since it is not specified that the case is exclusive of the state laws, then it is assumed that the automobile accident, in this case, involved federal laws.
Hence, the next step is to "take the case to the United States Supreme Court"