Which key element of presentation speaking addresses whether or not an audience finds you trustworthy?

The original mobile telephone service could handle only _____ simultaneous conversations in any one city

a) 46 b) 144 c) 720 d) 1,000

Politicians and propagandists use this propaganda device to generate a positive response to a statement representing vague virtue:

A. Name calling B. Glittering generalities C. Testimonials D. Card stacking E. None of the above