Answer:
This kind of support material is called lay testimony.
Explanation:
Support material is used in a speech in order to back up what the speaker is saying, and to be able to reach the audience with the information and message he wants to give. Lay testimony is a support material, in order to reach the audience, but it isn´t the best option.
Lay testimony has no proof of a strong background information, it is more a personal experience than a real knwoledge of the topic. This is why it is not such a strog support material to use.
