Mark is preparing for a group discussion with his class peers. The topic is the good and bad effects of computers on young people. He has prepared a few points on the topic. Which sentence in his presentation text stresses that the change he is discussing has had positive effects?

I believe that computers have changed the way we function in our daily lives. It’s true that some people might argue that computers have made youth lazy. But it's equally true that computers have made our lives more efficient. It‘s much easier to complete class projects or our homework with the help of computers. Through the use of computers and the Internet, we can find all sorts of information. Also, it takes less time to locate that information. Computers help us analyze and manage our daily work and activities in a systematic manner. Along with these benefits, computers can be extremely entertaining. We can use social networks to talk to people, play different sorts of games, listen to music, or even watch movies and TV programs. But spending hours on a social networking website or on playing games is not a productive use of time. It's one of the few reasons why computers are seen as a negative influence on youth.