C is the correct answer.
Since commas connects 2 sentences.
 
        
                    
             
        
        
        
I would say that it is false that the sentence uses the proper pronoun. We don't know whether the crew member is a man or a woman, which is why you cannot use <em>him </em>here. You should say - them. If we knew it was a man, then <em>him </em>would be fine. 
        
             
        
        
        
I believe that the thrush's song changed the mood because it was a song filled with hope from the divine that inspired him. Darkling Thrush refers to a bird who is weak and fragile, however, even with these qualities, he sacrificed himself.
        
                    
             
        
        
        
Note citations and parenthetical citations