11. Which of the following is an instance of informative speaking?
a. a doctor explaining how antioxidants affect the body
b. a vitamin distributor urging listeners to buy antioxidants
c. a scientist arguing that antioxidants have minimal health benefits
d. all of the above
12. In an informative speech, the speaker acts as a (n)
a. advocate
c. entertainer
b. teacher
d. motivator
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