Political scientist V.O. Key was more specific in his definition of public opinion when he described it as

a. the measure of guaranteed success.
b. collective opinions that can be dangerous for a politician to follow.
c. inaccurate results of inaccurate ideology.
d. those opinions held by private persons which government finds it prudent to heed.
e. the general feeling of the American public that is actually irrelevant to a government policy-maker.

ANS: D