Answer:
The answer is: 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.
Step-by-step explanation:
The emphasis on Mark's text about the postivie effects are the lines mentined above, as you can see, it's a list of all the positive (good things) that computers have in young people. After these lines it's also mentioned "entertainment" as a positive thing, but it states the importance to not overuse, as it may become a negative thing, rather than a positive, when used for entertainment.