You are presented with the quiz "The growth of plant roots is positively impacted by what kind 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 "fertile soil is loose, absorbent and pleasant smelling". 

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


 

 fertile          