Answer:
c. the brightness or dullness of a color.
Explanation:
<span>Humans began creating images about 30,000 years ago.
Many Archeologists has found several painting on the Wall of a cave as a proof that an image as an artform has been developed from around 30,000 years ago.
The structure of the artform of course was still simple and uncomplicated ( such as a hand print from blood)Hope this helps. Let me know if you need additional help!</span>
