Which of the following statement(s) about public opinion is/are true?
(i) There is no fixed definition of ‘public opinion’.
(ii) In a democracy, the government is expected to respect and consider the will of people in the process of making policies.
(iii) Political parties try to influence people through public meetings, functions and processions during the elections.
(iv) Cinema is not an influential tool in forming public opinion. Moreover, it needs to be heavily regulated by the government.