An amicus curiae brief is a. a prior judicial decision that serves as a rule for settling subsequent cases of a similar nature b. a legal document filed by interested parties to a case prior to a hearing or trial in order to influence the court's decision c. a law passed by congress that deals with the court system d. a bureaucratic regulation that deals with the court system

The correct answer is B. An amicus curiae brief is a legal document filed by interested parties to a case prior to a hearing or trial in order to influence the court's decision.

Explanation:

The amicus curiae is a Latin expression used to refer to presentations made by third parties outside a litigation, who voluntarily offer their opinion in front of any point of law or other related aspect, to collaborate with the court in the resolution of the subject matter of the process.

The information provided may consist of a writing with a legal opinion, a testimony not requested by any party or a report in law on the subject of the case. The decision on the admissibility of an amicus curiae is generally left to the discretion of the respective court.

the answer is use of support  

d) a constitutional amendment