:Generate a simple and minimalistic image illustrating the concept of visual hierarchy. The image should consist of three to four circles of varying sizes arranged in a manner that signifies their importance or hierarchy level. The circles should be distinct from each other but not overly complex. Utilize color or contrast to further differentiate the circles, ensuring that the largest circle represents the most important element and the smallest circle represents the least important element. Aim for clear alignment and spacing between the circles to guide the viewer's eye smoothly from one element to the next. Optionally, include text labels for each circle to explicitly indicate their hierarchy level. Strive for a design that effectively communicates the concept of visual hierarchy in a visually engaging manner. This image will be used to help learners understand the concept of visual hierarchy.