Final answer:
When studying prehistoric art, modern definitions of art can be both appropriate and inappropriate. Cave paintings and the Venus of Willendorf can be considered art, even if they don't fit into traditional categories. Stonehenge is often categorized as architecture.
Step-by-step explanation:
When studying prehistoric art, modern definitions of art can be both appropriate and inappropriate. While prehistoric art often does not fit into the traditional categories of painting or sculpture, it can be considered a form of art. For example, cave paintings like those found in the Upper Paleolithic period are created with intention and can be considered as artistic expressions. The Venus of Willendorf, although not traditionally categorized as a sculpture, represents the skills and creativity of prehistoric artists. Stonehenge, on the other hand, is often categorized as architecture due to its construction and purpose.