In the story, there is a conflict between how Laurie acts in school and how his parents see him. Why do we act differently in various situations or around other different groups of people? Is this a good skill to have or is it dishonest? I need a paragraph about why we act differently I guess, that's it.

Choose the sentence that is not logically connected in the paragraph. (1) one final effect of radio and tv on the language must must be noted. (2) there is no doubt that these great media of information have cut down considerably the time that used to be devoted to reading. (3) radio and tv may enhance the spoken word. (4) they tend to lower comprehension levels.