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.
When a viewer suggested that one of Adams' photographs looked abstract, Adams corrected him- "I prefer the term 'extract' over 'abstract', since I cannot change the optical realities but only manage them."
Answer:
Regarding the anatomy of an arch, what is the springing line? The springing line is an imaginary line between where the curves of the arch begin on each side
B. A visual that appears to ask a question