Which of the following choices is a good habit when communicating online? a. use all capitals in all of your writing. b. start an argument about a controversial topic. c. reprimand offensive posters when in an online discussion forum. d. ask permission before forwarding or posting anything personal about another person.

I'd say the answer is D. The other 3 question seem absurd, however they are quite common on the internet. But asking permission before posting anything personal is always great.

The linear perspective changed the quality of art because it gave art a sense of reality. it gave the illusion that the background and surroundings were actually close and/or far and a sense of depth. linear perspective change the quality of art following its birth the renaissance period as they want the art to be more realistic and they believe one way to achieve it is to use the method of linear perspective. it uses the principle of math to realistically portray space and depth in art. 

No question so i cant answer