He tricks persuades him by giving home candy
        
             
        
        
        
Answer:
(2) diffusion
Explanation: 
Diffusion is a process in which molecules moves from a region of higher concentration to the region of lower concentration. In this condition, plant roots contain high concentration of nitrates than soil so nitrates moves from roots through semi-permeable to the soil by the action of diffusion until the concentration is uniform or equilibrium. 
 
        
             
        
        
        
Answer:
D
Explanation:
it just is i  dont know y i just know it is D