Which of the following are ways in which public opinion is measured in america?

campaign advertisements

press releases

polls and surveys

presidential addresses

The correct answer is C) polls and surveys.

The following options are ways in which public opinion is measured in America: polls and surveys.

A poll is an investigation instrument used to ask you a question on any subject. It could be a multiple question. A survey, on the other hand, has a considerable range of multiple questions on a subject. People can add a comment on the survey. A poll could be as simple as “Are you a Democrat or a Republican?  In a survey, you could be asked about your electoral preferences, your preferences in different elections, a public topic of concern, among many others.  

the answer is c.

i hope this .