Final answer:
The Preamble to the U.S. Constitution primarily emphasizes the promotion of the general welfare and the common good.
Step-by-step explanation:
The Preamble to the U.S. Constitution primarily emphasizes the promotion of the general welfare and the common good. The opening statement of the Constitution outlines the goals of the new government, which include establishing justice, insuring domestic tranquility, providing for the common defense, and promoting the general welfare. This reflects the progressive reform goal of creating a government that works for the benefit of all people and promotes the well-being and prosperity of society as a whole.