When students arrived for the speech by joe clark, they had already seen posters around campus with his picture and the mention of a movie about him, lean on me, which many had even seen. in his speech of introduction, the student body president complimented clark’s achievements and commented upon his awards and recognition. the publicity and the introduction enhanced mr. clark’s credibility.

initial

Explanation:

A person has three types of credibility

Initial

Derived

Terminal

The credibility of a person before he/she starts delivering their speech is called initial credibility.

The credibility a person has while he/she is giving their speech.

After the speech has been completed the impression the person the audience has is the terminal credibility.

Hence, the case here enhanced Mr. Clark’s initial credibility.