If you weren't so negative, you would be able to see all the advantages of global warming.

A. If you were an optimist, you would be able to the all the advantages of global warming.

B. Global warming has a lot of advantages if you see it from a positive viewpoint.

C. Seeing global warming from a negative viewpoint, you would see its advantages.

D. If you wear a negative attitude towards global warming, you will see all of its advantages.