Final answer:
Participant observation is a method used by sociologists to study a group or community by immersing themselves in it and understanding the world from the group's perspective.
Step-by-step explanation:
In sociology, the method described is called 'participant observation.' It involves a sociologist immersing themselves in a group or community to be studied, participating in its activities over a period of time, and trying to become accepted in order to understand the world from the group's perspective. This method is typically used by interpretivists to develop an understanding of the subjects of their research.