Answer: Common law
Step-by-step explanation:
The common law is basically refers to the main body of the different types of unwritten law that is established by judges in the court.
The main purpose of the common law is that it influenced the various types of decision process ad the final outcome or result cannot be determine based on the existing rules.
According to the given question, the common law is one of the past practices through which the interpretation of the legal legislative and the statutes.
Therefore, Common law is the correct answer.