Your answer would be C. Internet since we all use the internet everyday to communicate through all over the world. We can currently communicate to the other side of the world with little to no effort now, almost 10 years ago it would of been very difficult.
It helps to keep things organized
Isn't it B because the x is increasing by .75 and y is deceasing by 2.5
Retrive you can restart your computer press f8 it will takr you to a menu were you can choos recover lost files then go from there
