Which of the Following Is a Reason That Public Opinion

Which of the following is a reason that public opinion matters in understanding American government?

A) Public opinion can help us understand and predict the decisions of the president, the Congress, and the Supreme Court.
B) Public opinion can help us understand why the American government tolerates and defends liberties such as freedom of speech.
C) Public opinion helps us understand how the media manipulate voters.
D) Public opinion can help us understand broader political outcomes, such as the fate of a legislative proposal.
E) Public opinion can help us understand why direct democracy is preferable to all other forms of government.