Which term refers to graphics or visual aids that present an idea or concept?

The term that best encompasses graphics or visual aids that present an idea or concept is "graphics." This term is broad and includes various forms of visual representations such as images, charts, and illustrations that are created to convey information effectively. Graphics serve to enhance understanding and communication by visually representing data or concepts that may be complex when described in text alone.

While the other terms have specific meanings within the context of visual representation, "graphics" stands out due to its comprehensive nature. Animation refers specifically to moving images, which is a subset of graphics. Illustration typically refers to hand-drawn or digitally created images that depict specific subjects or stories but does not broadly apply to all forms of visual aids. A diagram is a specific type of graphic that represents information through a systematic arrangement of components but does not encompass the full range of visual aids available. Thus, "graphics" is the most inclusive term for visuals that present ideas or concepts.