Nathaniel Wyeth, developer of the plastic soft drink bottles, dreamed of the day when we will be able to melt down plastic bottles, reinforce the fibers and make car bodies. Then when we are done with the cars, melt down the car bodies and make bottles out of them. This would be an ultimate example of_________.
A. biodegradation.
B. incineration.
C. recycling.
D. reuse.