Public opinion can be influenced by public relations and the political media. Hence, public opinions are sourced from the following.
It is often from mass media. Mass media utilizes a wide variety of advertising techniques to get their message out and change the minds of people. Since the 1950s, television has been the main medium for molding public opinion.
Therefore, the above sentences are the sources.
learn more about public opinion: https://brainly.com/question/24798153