How can the Preamble be used to evaluate how the federal government is doing its job?

I think the answer is PurposeExampleEstablish Justice Insure Domestic Tranquility Provide for the Common Defense Promote the General Welfare.

It is a republic because the Government derives its power from the people and then the purpose of our Federal Government, as found in the Preamble of the Constitution.  I am bad at these questions but I hope I helpded!

1) she is extremely upset