Solutions to the increasing problem with water shortages in central and southern California include ...

Solutions to the increasing problem with water shortages in central and southern California include
 
  a. reducing water waste by improving irrigation efficiency
  b. not growing water-thirsty crops in this arid climate
  c. raising the historically low cost of water to encourage water conservation
  d. educating water users as the value of this precious resource
  e. reducing water waste by improving irrigation efficiency, not growing water-thirsty crops in this arid climate and raising the historically low cost of water to encourage conservation