When a speaker intends to change and update the audience's common knowledge, the purpose is to

"Cyberwar is a potential threat to America's security, both physically and psychologically." This thesis statement is most likely for a speech about a(n)

A) organization. B) object. C) concept. D) process. E) event.

Alex tells Mary, "I don't care which set of procedures we use for determining days off. Just tell me what to do to put them into effect." Alex is fulfilling which of the group role?

a. follower b. tension releaser c. dominator d. recognition seeker e. deserter