Which of the Following Is Most Accurate When Describing the Field

Which of the following is most accurate when describing the field of global health?

A) Global health involves research and specialists in the health sciences, like physicians, nurses, and epidemiologists.
B) Global health involves research and specialists in the hard sciences, like biologists, chemists, and biostatisticians.
C) Global health involves research and specialists in the social sciences, like anthropologists, demographers, and sociologists.
D) Global health involves research and specialists across many disciplines, in which topics touch on health, culture, science, economics, and so on.