The correct option is C Nomenclature
The procedure of choosing names to identify each individual species of living organisms is termed nomenclature. It plays a critical role in grouping organisms into closely related or similar groups called taxa. Systematics is the study of the diversification of living forms, both past and present, and the relationships among living things through time. Systematics uses taxonomy to understand the classification and naming of organisms so that, relationships between different groups could be established accordingly.