Answer:
Deborah Tannen, a professor of linguistics, studied whether one form of interaction dominates American culture and suggested that Americans live in an argument culture.
Therefore, we should choose letter C. both a and b.
Step-by-step explanation:
Born in 1945, Deborah Tannen is an American linguist and author of several successful books. Tannen has studied how people interact and adapt their style according to the interpersonal relationship that contextualizes the conversation. She also has suggested that we live in a culture where words are weapons - an argument culture. We tend to react to other people's ideas with criticism, attacks, and opposition.