Answer :
Final answer:
Bronisław Malinowski is the anthropologist who conducted the Argonauts of the Western Pacific case study among the Trobriand Islanders.
Explanation:
The anthropologist who worked among the Trobriand Islanders on a case study called Argonauts of the Western Pacific is Bronisław Malinowski. Malinowski is renowned for his methodological contribution to social science through participant-observation during his fieldwork among the Trobriand Islanders from 1915 to 1918. His immersive study led to the publication of The Argonauts of the Western Pacific in 1922, which is considered the first modern ethnography and a seminal work in the field of anthropology.