What is the Bill of Rights?

a$.$

The Bill of Rights is the First Amendment to the U$.$S$.$ Constitution.

b$.$

The Bill of Rights includes all of the civil liberties and civil rights found in the U$.$S$.$ Constitution.

c$.$

The Bill of Rights is the first national Constitution of the United States.

d$.$

The Bill of Rights is the first $10$ amendments to the U$.$S$.$ Constitution.