A circular economy is one in which the raw materials that are obtained from the Earth are kept in the economy, and do not end up in a landfill or burned after the item is finished being used. Hence, the flow of the materials is circular and not one way. Which of the following is an example of this?

Answer Options:

a. Coffee makers that use recycled plastics from an older coffee machine instead of freshly pumped and refined petroleum/oil

b. Inexpensive clothes that are discarded after being worn a few times

c. Tables made of wood that can be burned to fuel the factory