Given the following passage

"Linguistic anthropology (also called anthropological linguistics) seeks to understand the processes of human communications, verbal and non-verbal, variation in language across time and space, the social uses of language, and the relationship between language and culture. It is the branch of anthropology that brings linguistic methods to bear on anthropological problems, linking the analysis of linguistic forms and processes to the interpretation of sociocultural processes. Linguistic anthropologists often draw on related fields including sociolinguistics, pragmatics, cognitive linguistics, semiotics, discourse analysis, and narrative analysis.",

answer the following question. Note that the answer is present within the text.

Question: __ also studies non-linguistic sign systems
semiotics
The passage states that linguistic anthropology seeks to understand the processes of human communication, verbal and non-verbal.
In addition, it also lists related fields including semiotics (the study of signs and symbols). 
Therefore, based on the context in this question: "__ also studies non-linguistic sign systems", which is referring specifically to studying non-linguistic forms of communication such as body language or hand gestures; the answer must be Semiotics..