What are economies of scale and oligopoly? How are they related?

List and briefly describe the types of major nonverbal cues the audience provides to the speaker

What will be an ideal response?

In the context of displaying presentational aids, which of the following is a disadvantage of using chalkboards?

a. They are difficult and take time to prepare. b. They cannot be used for short items of information. c. They signal lack of preparation by a speaker. d. They cannot be written on prior to a speech.