How does Waverly’s description of a place, event, or person in this passage develop a central idea in the text?

i believe that's the correct answer

greywater is gently used water from your bathroom sinks, showers, tubs, and washing machines. it is not water that has come into contact with feces, either from the toilet or from washing diapers. greywater may contain traces of dirt, food, grease, hair, and certain household cleaning products.