(apex) what is one major difference between state and federal courts in the united states?

a. only state courts issue opinions that can be appealed.

b. only federal courts are established by congress.

c. only state courts use an adversarial system during trials.

d. only federal courts deal with criminal cases.

Only state courts issue opinions that can be appealed.

Explanation:

State court sees the cases which is of general and mostly related to civil cases. Each state has a federal court and also a state court. It has a general jurisdiction but federal court has limited jurisdiction

Federal court deals with the cases which are of national importance. Tax offenses, robbery which involves huge amount which is of significance are dealt with. Mostly criminal cases are dealt with state courts but when it involves any individual who holds an important federal office and then federal court plays a significant role in issuing the verdict.

answer; they are called (pebbling);