You are presented with the quiz "if plants require less water, then that plant can survive when?" 

But you don't know the answer, so you turn to your teacher to ask for hints. He says that "if a plant requires less water then that plant will survive in a drought" and "when there is a drought, there is no water under the fence". 

So, what's the best answer to the question?


 

    no water under the fence       