Under which circumstances would a politician be most likely to ignore the results of a public opinion poll on a particular subject when making policy regarding that subject?

a. the poll indicates that public opinion on the subject is volatile (liable to change).
b. the poll indicates that the public is well-informed on the subject.
c. the poll indicates that the subject is only important to a very small, but vocal group.
d. the poll indicates that the politician's position is unpopular with the public.