Let's break it down. The first part, Visual, is what you see when you look at something, color, arrangement, font, etc... The rhetoric part deals with the persuasion. In conclusion, it's what we see and how we act or think when we see it. It is one's ability to understand what an image is attempting to communicate.
Maybe because they listen to the loud music constantly. Not sure sorry
multiple ways
. overlapping and layering
. linear perspective
. size, colour, detail and texture