In her speech, Rensi said, "To learn more about superconductors, I talked with Dr. Stephen Blundell, a professor of Physics at the University of Oxford who is one of the most respected superconductor researchers in the world. He told me that superconductors hold promise for even greater technologies." What kind of support material is Rensi using?

This question is missing the options. I've found the complete question online. It is as follows:

In her speech, Rensi said, "To learn more about superconductors, I talked with Dr. Stephen Blundell, a professor of Physics at the University of Oxford who is one of the most respected superconductor researchers in the world. He told me that superconductors hold promise for even greater technologies." What kind of support material is Rensi using?

a. Expert testimony

b. Extended example

c. Statistics

d. Peer testimony

The correct answer is letter a. Expert testimony.

Explanation:

There are different types of support material we can use when giving a speech. The support material, as the name suggests, aims to support our claim by providing the audience with evidence. An expert testimony is a reliable opinion given by someone who has expertise in a certain area. In Rensi's case, she talked to a doctor who teaches at Oxford and who is "one of the most respected superconductor researchers in the world". Therefore, the information she is about to give in considerably reliable. This man has extensive experience and knowledge in this area.

d.) continue to rise rapidly

the above statement/question is (true);