Which of the following is NOT true about public opinion polls? A) A poll cannot express the views of all groups.
B) Polls are a great way to determine how people may vote.
C) Public opinion polls provide candidates with information about what people like and want.
D) The opinions voiced in a poll never change.

Historians have recently discovered a historical journal published in the early twentieth century. the journal contains facts based on original sources about the downfall of the early byzantium empire. historians consider this long-lost journal to be a breakthrough in their understanding of the byzantium empire. based on this information, the journal is a source.