What is the primary characteristic of Aboriginal rock paintings?

The primary characteristic of Aboriginal rock paintings is that they were primarily for decorative purposes, as well as serving spiritual and cultural functions. These artworks often reflect the connection of the Aboriginal people to their land, beliefs, and ancestral heritage. The symbols and patterns used in these paintings convey important stories, rituals, and knowledge, making them integral to the cultural identity of Aboriginal communities.

While the other options might seem plausible, they do not accurately represent the essence of Aboriginal rock paintings. For instance, these artworks do not typically depict modern scenes, nor are they focused on individual portraits; rather, they often represent collective stories and experiences significant to the community as a whole. Additionally, Aboriginal rock paintings are traditionally created independently of European artistic influences, emphasizing the unique cultural practices and expressions developed over thousands of years.