<h2>I can't see the painting, but I can tell you all most all WWII era paintings were propaganda to either persuade some one to join the U.S army, the Soviets, or the German Allied Forces.</h2>
Answer:
Secondary source.
Explanation:
The image is not the direct product of a historical event; it was created afterwards using an analysis of primary sources.
Teotihuacan was most famous for its obsidian - this is the correct answer. Obsidian has a black colour. Another stone produced in Mesoamerica and used excessively in jewelry and decoration is jade - but jade is more typical of the Aztecs and the Mayas, not Teotihuacan.