A because people can't see the seeds.
        
             
        
        
        
Answer:
The pulmonary artery carries oxygenated blood from the right ventricle to the lungs. The blood here passes through capillaries adjacent to alveolar and becomes oxygenated as part of the process of respiration. In contrast to the pulmonary arteries, the bronchial arteries supply nutrition to the lungs themselves.
Explanation:
 
        
                    
             
        
        
        
The human eye is grief in damage of in-depth perception, color recognition, and peripheral vision. Judging speed and distance based on visual evidence is also more difficult in the dark.  In addition, the darkness of night, and even the dimness of dusk and dawn.  
 
        
                    
             
        
        
        
If I'm not mistakened, the answer is D 
Hope this helps :)