Chinese River Valley civilization<span>although it was from 8000 to 2000 BCE
They used the river for irrigation and they raised pigs and chickens. Used stone tools</span>
I know one of the answers are "the fingers of the wool pluckers would be eaten by the acid that was used to loosen the wool and pulled off by bare hands"
But I am not sure what the other two are, if you get them please let me know.
Answer:i think it’s A or C, they seem the most relevant
Explanation: