Respuesta :
The answer it b because reduces water use so there is more for the earth
The best way for helping the earth water supply that should be last for future generations should be considered option b. where it decrease the residential water usage.
What is residential water?
The average American family should be used for more than 300 gallons of the water per day at home. Approximately 70% of the use should arise indoors,
Moreover, outdoor water should be accounted for 30% of household that should be high in drier parts for the country and it should be more water intensive landscape.
Therefore, the option b is correct.
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