The reason engravings are so widely dispersed is because Engravings didn’t require the same protection that cave paintings did in order to endure.
As a result of this, most African art was made of engravings which were done to last as long as possible. This was then copied by several African cultures and allowed to engravings to spread.
In conclusion, option D is correct.
Find out more on African art at https://brainly.com/question/11174931.