Answer:
I believe the correct answer is Precedent.
Explanation:
Precedent is a previous situation that has occurred of which someone is now trying to rely upon to solve a similar problem. Now, in Law, Precedent is a previous decision of the Court in a particular case that established a legal principle and is now applied in a similar case with the same facts. For instance, a lawyer when arguing a case in the court of law uses judicial precedents to back up his arguments. Precedents are case laws that judges and justices use in arriving at a just decision. It serves as a guideline.
“Here is how you handled this situation before" clearly shows it is a precedent.