How does the phrase "a more perfect union " in paragraph 25 contribute to the development of ideas in the speech ? A The phrase implies that Obama believes that the United States will never be perfect and Americans should recognize the country's faults .

B The phrase references a similar phrase in the U. S. Constitution, emphasizing the unconstitutional discrimination African Americans have faced and continue to face today

C The phrase emphasizes Obama's hope for a better, more united future in the U. S. and the efforts that must be made to reach this.

D The phrase suggests that Obama believes that the country has substantially improved in the past few decades and does not require much