Is there something intrinsically special about human beings? what is it?

Based on this excerpt the authors are most likely to attempt to answer which question

If you wanted to figure out a topic and some details about that topic you would want to use a ?

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.