You are presented with the quiz "what sees a positive impact on root growth due to looseness of soil?" 

But you don't know the answer, so you turn to your teacher to ask for hints. He says that "the looseness of soil has a positive impact on a plant 's roots' growth in that soil" and "many orchids are rewarding indoor plants". 

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


 

     orchids      