What is the difference between vcc/cv and vc/ccv

Where did moon shadow’s father get the name windrider?

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.

Which piece of evidence support the viewpoint expressed in this passage