Answer:
1. Surplus of food
Explanation:
In order to build a a society, the very first thing that human civilization need to do is find a way to settle in an exact same place for a long period of time. This could only happen if we have a surplus of food in that area.
Without it, we need to be a nomadic group. This require us to move from one place to another while seeking new source of foods. In such situation, we wouldn't have enough time to slowly develop our traditional tribes into a modern society.
healing wounds, i think. i know it aids in digestion, regulates body temperature and lubricates the body's moving parts, but i dont know about flushing out wastes, i think it does though, because urine is actually 94% water, so i think the only thing it doesnt do from these is healing wounds, someone correct me if im wrong.
All the options above can result from economic specialization. The correct option is the last one.
Honestly I wouldnt take my advice because I know nothing really about this but I believe its either B or D. But I'm more lenient on D because the patient could be having a allergic reaction to the medicine so that it may not have developed into Aids just yet. but I also said B because it may be a likely chance that it has evolved into Aids BUT I have no idea what a CD4+ count is so sorry if I wasn't much help lol
It would be educate patients about safe food handling procedures.