NO.PZ2022072901000010
问题如下：
Which of the following best describes the principles of a circular economy?
选项：
A.Extracting natural resources for products that are then used and eventually discarded.
B.Designing out waste and pollution, keeping materials in use and regenerating natural systems.
C.Ensuring that all products are returned to the manufacturers to reuse component parts.
D.Producing goods only for consumption by customers in the manufacturer’s domestic market.
解释：
在循环经济中，产品和材料被修复，再利用和回收，而不是被丢弃，确保一个工业过程的废物成为另一个工业过程的宝贵投入。
我理解b是定义，但c错在哪里呀？
