What Is Meant by the Term Ethnogenesis in the Context

What is meant by the term ethnogenesis in the context of qualitative research methods?

A) An approach that seeks to measure how often an action is performed by an individual
B) An approach that attempts to understand individual actions as part of a wider 'episode' in an individual's life
C) An approach that looks to understand individual actions as wholly reflective of a person
D) An approach that attempts to understand an objective truth to why people behave in a certain way