A.sweat glands .................
I'd say the best action to improve your health would be to frequently exercise, and eat healthy foods.
When a disease is endemic to a country or region, it frequently infects the population. Correct answer: A
Endemic disease denotes a disease that is found in a certain geographic region and is constant present and/or there is a usual prevalence of a disease or infectious agent in a population within a geographic area. Example: Malaria is endemic disease because is restricted to a place (Afrca).