Question

question 4 (20 points)
which is an example of the speaker as a presentation aid?
illustrating an upward trend in u.s. maternal mortality
playing the recorded voice of thomas edison
pointing out the distinctive qualities of a famous painting
demonstrating a yoga position

Explanation:

A presentation aid helps convey a message. When the speaker demonstrates a yoga position, the speaker's body (as part of themselves) is used as the aid. Illustrating a trend would use a graph (external aid), playing a recorded voice uses audio tech (external), and pointing at a painting uses the painting (external). Only the yoga - position demo uses the speaker's own physical presence as the aid.

Answer:

demonstrating a yoga position