Answer:
C. If a solar cell breaks, it releases chemicals and can harm humans.
Explanation:
Hope this helped! :)
 
        
             
        
        
        
When in doubt pick C I don’t really know the answer but I just pick C
        
             
        
        
        
Answer : 
B 
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Well depends how fast they're going if it's a slow speed a bus but at a fast speed a bike because you wanna be careful while stopping