Michael is giving an informational presentation to his class about how gravity affects astronauts in space. Which statements are the best advice for Michael?

a. Speak a little faster than you normally speak so that the audience does not lose interest.
b. Speak a little slower than you normally speak because your purpose is to inform.
c. Pronounce all words in the speech clearly.
d. Pronounce words the way you do in everyday speech, even if that means pronouncing some words incorrectly.