I believe the answer is c. Herpes and HIV are STD's so it's like stuck with you. :) Hope this helped!
The first step is to go to my doctor and schedule a flu shot. If a person in my family has gotten it, my chances of getting are higher so if I were to get a flu shot, it would make it less likely that I will get it. The next step would be to take care of myself. I should wash my hands and practice good hygiene throughout this so I don't catch the flu either. I would then try to make sure my brother is healthy again. This is important because it allows him to not spread and affect others as well.
If your body is lacking a substance like water or salt it will reabsorb some of it,