Explanation
Let's look at the meaning of the marked option:
Anthropology- the study of human societies and cultures and their development
Let's look at the meanings of the other given options:
Archeology- the study of human history and prehistory through the excavation of sites and the
analysis of artifacts and other physical remains
History- the study of past events, particularly i n human affairs
Ethnology- the study of the characteristics of various peoples and the differences and relationships
between them
Hence, from the given meanings, we find that Anthropology is the correct one-word substitute.