Anthropology is a. the social science that deals with the behavior and thinking of organisms. b. the comparative study of past and present cultures. c. the social science that studies human society and social behavior. d. the observable facts or events that involve human society.

In general terms, anthropology is "c. the social science that studies human society and social behavior," but it can really encompass the study of "humanity" in general. 

Antrophology is characterized as the comparative study of past and present cultures - B. Anthrophologists often do field work where they compare how people were living in the past and how they live in these days in different areas of life.