You are presented with the question "well-drained soil has a positive impact on a plant 's what growth in that soil" and the following answer choices: 
- stem
 - heat
 - fibrous
 - leaf
 - tissue
 - rice
 - flower
 - roots

Now knowing that the looseness of soil has a positive impact on a plant 's roots' growth in that soil and pinions tolerate drought and alkaline soil, but prefer loose, well-drained soils, choose the best answer.


 

        roots 