Consider the following scenario and answer the question that follows.

UpCoh Clothing offers an option to their consumers whereby they can sell their used clothes, which are still in great condition, back to UpCoh Clothing. UpCoh Clothing then reworks the items, and some parts are sent back into the production process. The reworked items are then returned to the market “as good as new”.

The above scenario is an example of ________.