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.
8) Chinese crawfish since it is cheaper.
9) The opportunity cost is Louisiana crawfish because it would struggle due to it's expensive price. The trade off would be the Chinese crawfish.
10) Price is not the only factor. Some customers may like Louisiana crawfish, and others may like Chinese.
11) The demand of the Louisiana crawfish would decrease while the chinese increased
