Which phrase reflects the concept of self-government in the Constitution?

The phrase "We the People" is significant in the context of self-government because it emphasizes that the authority of the government derives from the consent of the governed. This opening line of the Constitution establishes the principle that the power and legitimacy of the government are rooted in the will of the citizens. It reflects the idea that the people are the ultimate source of political power and that government exists to serve them, reinforcing the concept of democracy and the responsibility of citizens to participate in their governance.

In contrast, phrases like "We are the Nation," "Let Freedom Ring," and "United We Stand" may convey ideas of unity, freedom, and collective identity, but they do not explicitly articulate the foundational principle of self-governance that is encapsulated in "We the People."