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- Everything must be edible
2. Must be visually pleasing
Answer:
History is the study of past events while Social history concentrates upon the social, economic, and cultural institutions of a people
The study/interpretation of visual images or symbols
