Answer:
they treat you unfairly for their own benefit, especially when you are trying to be kind or to help them.
Explanation:
to use someone's weakness to improve your situation.
 
        
                    
             
        
        
        
Answer:
What can you infer from this graph?
Explanation:
you cant
 
        
                    
             
        
        
        
It's got to be C because none of the others relate to collaboration, but I'd say if you were unsure about this answer then the only other sensible one could be B, but I'd go with C. 
        
                    
             
        
        
        
can we get some information on this first