Select the statements that represent ways in which audiovisuals can enhance oral presentations. select all that apply.

increase listener comprehension

communicate content

reinforce key concepts

hold audience attention

Explanation:

Audiovisuals are a key tool for oral presentations. One of the most important issues is the audience attention, you must to be able to maintain it for a sufficient period of time, other way you're gonna be talking to the wall.

Also, images can help to explain better, as the saying stands: a picture is worth a thousand words.

showing or suffering from nervousness, fear, or a lack of confidence

the words "slavery," "devils," and "murderer" evoke a sense of disgust.