Answer:
Recycled Waste water is an important concept for today's time.
Explanation:
Water is quite precious and recycling water for uses other than drinking is referred as Waste water recycling. It is also called reclaimed water.
It is the process of converting waste water into water that could be useful in irrigation, or in agricultural fields. Such water could also be used in replenishing ground water and washing vehicles and so on. Though it is not useful for drinking, it will help in conserving water and can be extensively used.
Thus, this will work as revolutionary idea in today's era when world is dealing with the problems like shortage of water.
The first thing you should know about Rube Goldberg is that he is a cartoonist who created cartoons about crazy machine ideas like completing a very simple task using a very big production
The second thing is that many people use Rube Goldbergs machines to do stuff. There is a video on U tube which many people created a machine to light up a chirmas tree!!
An Idea is that search Rube Goldberg machines on U TUBE and get some ideas!
Hope this helped (:
I believe your answer is B.