Read the Passage carefully and answer the quest... - JAMB English 2019 Question

Read the Passage carefully and answer the questions that follow.

The term Mass Communication occurs when information is disseminated to a relatively large number of people in different places. it should be seen as the same thing with talking face to face with someone else. With mass communication, there is no answer, smile, laugh or lock of surprise. the people who receive the message are as far away from the source of the message as far away as you are from the announcers on the radio or from the newscasters on television, or from the writer of a column in the local newspaper.
There are three identifiable means of errors in mass communication. There is one done through the printed words, books, magazine and newspapers. The other is primarily radio, but also records and tape recordings. Also, it can be done through a combination of sound and pictures as in television, films and the more recently popular video tape.
Together, they are referred to as the mass media.
All media can be used to inform and entertain. However, there are coverts roles played. It may be to educate as in school broadcast. Again, the aim may be to persuade as when the media are used by advertisers or for political broadcasts. The media are often in strong position to influence public opinion because they select the topics to be presented and can stress the importance of one issue over the other.
The mass media have, in recent times, come under acerbic criticism. Many presenters have become not only conscientized but also immensely concerned about the possible effects that science of violence and bad behavior may have on their children. More worrisome are the potential danger of political and commercial propaganda.

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One major source of worry about the mass media is from?