You are presented with the quiz "The best place to locate a septic system is" 

But you don't know the answer, so you turn to your teacher to ask for hints. He says that "if soil is permeable then water easily flows through that soil" and "the suitability for septic drainfields is poor because of slow permeability". 

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


 

 in soil where water drains easily          