What is the primary purpose of the Declaration of Independence in the United States today?
a. It is a historical document that clearly lays out the strategic support the Americans would need from their allies to secure independence.
b. It is the fundamental building block of the U.S. legal system.
c. It lays out the basic structure of the U.S. military organization.
d. It is a venerated text that expresses the nation's founding ideals.