Answer:
extended example
Explanation:
The supporting material used is an extended example. An extended example uses a narrative or anecdote to tell a story to better illustrate the point the speaker is trying to make. In this support, the speaker is telling a story about Lori Crown and her experience with valley fever. The purpose of this extended example is to show how harmful valley fever can be as well as demonstrate it's prevalence in southwestern states. Not only does this story show the ill effects of valley fever, it also demonstrates how costly it is to fight it.