Final answer:
Visual images are mental representations that mimic perception.
Step-by-step explanation:
D) Visual images are mental representations that mimic perception.
The nature of visual images is best expressed by option D, which states that visual images are mental representations that mimic perception. Visual images are not a precise representation of reality (option A), as they can be subjective and vary from viewer to viewer. They also do not lack detail and are ambiguous (option B), as they can contain a wealth of information and meaning. Visual images are not static and unchangeable (option C), as they can be dynamic and evolve over time. Finally, visual images are not completely subjective and lack universality (option E), as they can be understood and interpreted by multiple individuals.