1) It was quite necessary not only for Buck, but also for others struggling to survive in the wild North. If he hadn't killed Spitz it it could have been very dangerous for others because he was very aggressive due to the hunger. Even though he was the leader, blinded by hunger he could do anything to survive, forgetting about the rest of dogs.
2) If he hadn't died he could have get many other innocent lives, like he had done to Curley. This character yielded to the external conflict of the harsh wild conditions, and his instings were much more powerful than his sense of justice so he could have bring harm until he reached his own safety.
        
             
        
        
        
The correct answer is:
a) Problem and solution
In composition, a problem and solution format is a type of text where you can identify a problem and proposing one or more solutions. A problem-solution essay is a type of argument. "This kind of texts involve argumentation in that the writer seeks to convince the reader to take a particular course of action. In this case the writer is trying to convince you to own a pet.  
 
        
                    
             
        
        
        
I believe they are common because people believe that is where we could be headed. Will we run society into the ground, or will we prosper? Will the society be a "Divergent" or "Giver" society or will it exist as it does today? Since we have no way of knowing, we pretend we do.
 
        
                    
             
        
        
        
Sheila and Jean are both the indirect object. Book is the direct object