Answer:
The answer is B. Court decisions.
Step-by-step explanation:
Common law refers to a law that is derived from courts' judicial decisions as well as other similar tribunals. The most important characteristic of common law is that it emerges as a precedent.
Common law is usually utilized when the parties disagree about the establishment of a specific law. In this case, a common-law court reviews the decisions that were considered in the past by relevant courts and summarizes the different principles related to those cases to apply them to the current facts.