People Often Form Opinions on the Spot,meaning That

People often form opinions on the spot,meaning that:

A) those opinions have essentially no meaning to the people who profess them
B) people rely very heavily on their principles in formulating opinions
C) people are sensitive to, and form their opinions based on, what they have recently seen or heard
D) their opinions are ill-informed and elected officials should simply ignore them
E) most of the research on public opinion should not be taken seriously