The correct answer is C) Common Law.
The heading that best fit in the empty box to the right is Common Law.
When talking about Common Law we are referring to rules or regulations not written in the Constitution but a set of “unwritten laws” that are supported by the precedents of the decisions that previously has made the Court. This Common Law can help to make decisions in the coming cases. The Common Law system was an influence of the British in the times of the colonies.