The correct answer to this open question is the following.
Although there are no options attached, we can answer the following.
The beliefs and rules of a social or political organization are outlined in a Constitution.
The Constitution is the "heart," the "core" of a Republican and democratic nation. It is the very essence of the form of government and includes the rules, regulations, laws, rights, and obligations of the citizens. The Constitution is the foundation of a country.
As in the case of the United States, let's remembers that delegates met at the Constitutional Convention of 1787 in the city of Philadelphia, Pennsylvania to amend the Articles of Confederation and create a new Constitution that included a Bill of Rights that is the first ten amendments to the US Constitution.
