In his speech about drunk driving, david told a story about three of his friends who died in a drunk driving accident. he went into detail about how they had been partying, how they insisted on driving, and how their lives ended when they crashed into tree in the middle of the night. what kind of supporting material did david use in his speech?

David is giving a persuasive speech, that menas he is trying to convince or persuade his audience to do or don't do something. In this case, he probably wants to stop people from driving after drinking alcohol. To accomplish his objective, he is recurring to anecdotal evidence. That is, evidence taken out of real life events that support the author's point of view, he tells it as a short story emphasizing on the most important things that will help him make his point. By doing this, the audience can relate this events to their lifes, feeling empathic, knowing that this accidents can happen to anyone, therefore taking action in order to avoid them. We can see David is appealing to pathos, or emotions, to make a deeper impact.

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lemme actually be useful and say i believe the answer is the first one.