Answer: Slide
Step-by-step explanation:
A visual aid is something which makes the viewer under the presentation without using the audio and it enhances the presentation. The photographs, graphs, charts are usually included in the slides to make people understand the presentation more clearly.
The slides includes the information in a written form and along with it are attached some photos, pie charts, et cetera.
So, even when the people are not listening to the presentation they can understand the presentation.