We the people of the United States, in order to form a more perfect Union, establish justice, insure domestic tranquility,
provide for the common defense, promote the general
welfare, and secure the blessings of liberty to ourselves
and our posterity, do ordain and establish this Constitution
for the United States of America.
Which section most clearly indicates the main purpose of the document's
authors?
A. ordain and establish this Constitution
B. the people of the United States
C. provide for the common defense
D. insure domestic tranquility