Final answer:
Behavioral anthropology is not considered one of the main subfields of anthropology; the four widely recognized branches are cultural anthropology, linguistic anthropology, archaeological anthropology, and biological anthropology.
Step-by-step explanation:
The subfield that is not considered a main branch of anthropology is behavioral anthropology. The four main subfields of anthropology that are widely recognized include cultural anthropology, which involves the study of social practices, rituals, and values; linguistic anthropology, which explores the role of language in shaping cultures; archaeological anthropology, which uses artifacts to understand ancient societies; and biological anthropology, which examines human biological evolution and diversity. While some aspects of behavioral studies can be incorporated within these subfields, particularly within biological anthropology, 'behavioral' is not commonly listed as a distinct subfield in the same way as the other four.
Answer: c-behavioral