Answer:
The correct answer is - they are rapidly disappearing.
Step-by-step explanation:
Anthropology is the study of all the aspects of life that makes us human, it includes the present and past of human history. A nonliterate society is a society that does not know reading or writing or had no written language.
These cultures or societies are not common now and are disappearing very fast therefore anthropologists focus on nonliterate" societies.
The correct answer is - they are rapidly disappearing.