Linguistic anthropology is a research strategy of biological anthropologists studying the emergence of language among nonhuman primates. relies heavily on the methods of phrenology. includes sociolinguistics, descriptive linguistics, and the study of the biological basis for speech. includes cultural anthropology and paleoecology. has securely dated the origin of hominid language.

C) includes sociolinguistics, descriptive linguistics, and the study of the biological basis for speech.

Explanation:

Linguistic anthropologists have drawn upon mentioned fields to identify how apes can use language and seek to find the evidence for a biological basis in speech. As humans communication is more based on the use of sounds, apes will rather emphasize communicating with body language.

Since apes lack vocal organs they are unable to use words, but they use signs and can interact through computer-generated or adapted devices.

Many non-human primates apparently can make requests, answer questions and follow human instructions when using an interface.

Experiments in this branch of anthropology help scientists trace back to an origin of how language forms a structure and use since it first appeared, how it evolved and its current form.

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