Question: As the population in an area grows, water usage increases. Eventually, water usage can outstrip the supply. Which measure to increase the amount of available water demonstrates the best stewardship of the resource?

  Options: 
 A. discovering new reservoirs of water in the aquifer
 B. reducing water usage through conservation measures
 C. combining hydrogen with oxygen to make water
 D. piping in water from an aquifer elsewhere
Answer: B