The answer is "C. Disease reporting".
Public health is characterized as the study of ensuring the security and enhancing the improving the health through training, arrangement making and research for sickness and damage aversion.
The meaning of public health is distinctive for each individual. Regardless of whether you get a kick out of the chance to do the math, lead lab or field explore, plan approach, or work straightforwardly with individuals to help enhance their health, there is a place for you in the field of public health. Being a public health proficient empowers you to work the world over, address medical issues of networks in general, and impact strategies that influence the strength of social orders.