Public Perceptions of the Most Important Problem Facing the Nation

Public perceptions of the most important problem facing the nation can best be described as which of the following?

A) Perceptions about the most important problem vary greatly by political party.
B) Perceptions about the most important problem tend to be based on stories that have been given a large volume of media coverage.
C) Perceptions about the most important problem have steadily focused on economic issues since the Great Depression.
D) Perceptions about the most important problem have steadily focused on foreign policy issues since September 11, 2001.
E) Perceptions about the most important problem are something polls rarely measure.