Ninety percent this answer is too short so I am just typing this
Answer:
Principle of karma.
Explanation:
This represents the Hindu principle of karma. Also called the spiritual system of cause and effect. According to this principle, it is said that intent and actions of an individual (cause) influence the future of that individual (effect). It means that action with good intent will lead to happy and positive results and vice versa.
Rock art? It's probably not the best answer, but apart from tools and weapons, it was the only thing I could think of.