It seems that you have missed the necessary options for us to answer this question, so I had to look for it. Anyway, here is the answer. Since Mary is employed by a multinational firm, and works long hours on a desktop computer and has recently experienced back pain and visited her doctor, the guideline that <span> the doctor would advise Mary to follow is this: SIT BACK ON THE CHAIR. Hope this helps.</span>
Answer:
1. A. Harmony
2. B. Primary colors
3. B. The color violet is created
4. A. Lines that are suggested, but not actually drawn in art
Explanation:
I hope my answers helped. :D
