C) Declaration
Step-by-step explanation:
The US Constitution is started with the preamble “We the people” and is then followed with articles. The Bill of Rights (which was added to the Constitution in the early 1790s) contains amendments, I.e the 1st Amendment (freedoms of speech, religion, etc.
The Declaration of Independence was written was written in 1776 to announce the creation of the a new country and split the colonies from England and the King. This is a completely separate document from the US Constitution.