Answer:
Down below.
Explanation:
1. The audience responds to the speaker's enthusiasm.
2. Familirarity with subject matter gives the speaker more confidence and authority.
3. An early search for sources can help you decide if you need to switch topics.
4. Your assignment and audience determine your topic.
5. The length of your speech shoul influence topic selection.
I only see 3 excerpts.....those I can see would be as follows:
1) Society and class
2) humankind and nature
3) evolution
Don't know why the other 2 excerpts don't show up (for me)
