Answer: (Homer 376-377) the last one
Explanation: An MLA citation goes "-qoute-" (Authors Last Name Page Number(s)). Don't put a period at the end of the qoute, but put it at the end of the citation.
The Preamble:
We the people of the United States of America, in order to form a more perfect union, establish justice, ensure domestic tranquility, provide for the common defense, promote the genreal welfare and secure the blessings of liberty to ourselves and our posterity, do ordain and establish this constitution for the United States of America.
It states that they're going to provide freedom for the nation, provide support for our soldiers (I think that's what they mean by common defense), enforce laws, and basically make the nation just a peaceful, free land.
Let me know if this helps.
Pollution and green house effect
“promote the general Welfare, and secure the Blessings of Liberty to ourselves and our Posterity”
Posterity means future generations. So they want to create the perfect Union that will last a long time