Concept:The fundamental law of a country is the supreme legal document that establishes the system of government and basic principles.
Explanation:The term “fundamental law” refers to the body of rules that define the structure, powers, and limits of government.
It is the highest law of the land, above all ordinary legislation.
In a modern state, this fundamental law is written in a document called the constitution.
It guides how authority is exercised and protects the rights of citizens.
Therefore, the fundamental law of a country is its constitution.
Answer:C. constitution