The increase in Jeremy's credibility during the speech is due to derived credibility
Answer: Option A
Step-by-step explanation:
Derived credibility is created by the speaker during the course of the speech. The content of the speech, the manner in which the speech is delivered and the quality and professionalism depicted when delivering a speech all help a speaker to gain credibility known as derived credibility.
When a speaker derives credibility during his or her speech, the audience listens to the speaker with attention and like the speaker and what is being said. Derived credibility enables a speaker to gain the attention of audience for longer duration.