During the speech introduction, the audience decides whether they are interested in the topic and the speaker. to build credibility, a speaker should establish his or he

qualifications

Explanation:

To attract the  audience and to make them interested in the topic of your speech, a speaker should give a first good impression at the speech introduction. There various ways to start a speech that would gin immediate attention like quotes, shocking statements, etc. Equally important is to establish a credential position by the speaker. He should tell his audience about the knowledge and credentials he holds to increase his credibility to speak on that topic.

explanation:

i believe the primary and secondary sectors

answer; rational if melanie values sleep more highly than the benefits she expects to receive from attending the class;