Answer:
Visual aids can increase the audience's interest and understanding on a topic.
Step-by-step explanation:
When explaining a complex or long concept to an audience, the speaker has to avoid information overload so as not to lose the audience's attention, which is usually short-spanned. Visual aids such as infographics can help summarize the information, exemplify the concepts through images, make it more memorable and simple to understand, etc.
The reason why people can process information better through images is that, according to studies (such as the study Functional representation of vision within the mind: A visual consciousness model based in 3D default space by RavinderJeratha, Molly W.Crawforda and Vernon A.Barnesb), between 50-80% of the human brain is used for some sort of visual processing.