Jacob distributed a survey to his fellow students asking them how many hours they spent on the Internet in the past day. He also asked them to rate their mood on a scale from 0 to 10, with 10 being the happiest. The scatter plot below shows the mood rating for each amount of time online.

Which of the following is the best estimate of the average change in mood rating associated with a 1 hour increase in hours online?

A. -4 points
B. -2 points
C. -1 point
D. -1/2 point