You are presented with the quiz "Soil receptive to water absorption has a positive impact on what aspect of the plant?" 

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 "most mulches help to keep soil surfaces loose and receptive to water absorption". 

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


 

    root growth       