1. Art is supposed to be free a way to to set emotions feelings and express your feelings. Art can sometimes also be use to help anxiety depression stress ETC. 2. the reason they do that is because it helps them visualize there artwork more easily and efficiently. They also might do it because of it may help them when it’s on another platform or because they just want to have a extra copy Incase something happens to the digital one. Explanation:that’s all I know
Answer:
Early cave art shows that people had advanced knowledge of the night sky within the last ice age. Hopefully this helps!

TOPIC:- PASSIVE VOICE
QUESTION:- He was painting a portrait.
ANSWER:- A portrait was being painted by him
RULES FOR FORMATION:-
1. Change the object into subject.
2. use 3rd form of verb .
3. use by and then use subect as object.
HOPE IT HELPES YOU.