Answer:A key informant
Explanation:A key informant in anthropology refers to someone who can be used to gain Information since they are an epxert source of information. It is mostly common in cultural anthropology but can also be used in other fields such as social sciences investigation. Social informants will usually be people who have lived long in that community like elders who have seen many things happens in their culture and can share some experts Information regarding their own culture and who have studied a great deal about the origin of their culture
