1. saves the trees, as it doesn't waste paper
2. provides access to more information
3. is more interactive than offline education and helps control the classroom
The answer for this question is letter D. appropriate format. Fair enough, the activity of the subject is equally important. However, if it is organized in a very non-systematic way that the reader of it cannot easily comprehend, then it is useless.
I believe 4, 6, 7, 8 and 9 are run-ons.
