2 and3 are the two correct ones
Portraits were important in early history because if we had found those paintings and pictures we can determine what there life back then was and what materials they had in the past then what higher materials we have now.
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Answer
Cave paintings have been dated in different parts of the world to at least 30,000 BCE
Explanation
The Chauvet Cave in France contains the earliest cave paintings that date back to early 30,000BCE as per radiocarbon dating. Mass-spectrometric radiocarbon dating is the technique applied in dating cave art. This method can push back the dates of old cave art to at least 40,000 years ago.
