From my known knowledge, it would be C: "Dawned"
One reason is because if you have the sentence "I quickly ran past the store." the adverb would be quickly.
Thank you for your time.
        
                    
             
        
        
        
C would be your answer there due to it trying to help you visualize the setting
        
                    
             
        
        
        
Before he turned into an insect, Gregor's biggest priority in life was to work hard and pay off his family's debt.