It's D citizens in ancient Greek city-states developed ideas about representation and establish direct democracy
Either A or D I think. I’m not sure. Most likely A.
Their knowledge allowed them to take control of the production process and the training of apprentices.
Answer: A. Bamboo, shells, bones, and wood
Explanation: Before its invention, bones, tortoise shells, and bamboo slips were all used as writing surfaces, but as Chinese Hemp fiber and silk were used to make paper but the quality was far from satisfactory. Books at that time were made of wood or bamboo slips so they were heavy and occupied a lot of space.
All of these answers could be true, I know for a fact that A is true, could you give more context?