The voice because words are more powerfull than the body language. Hope I helped.
 
        
             
        
        
        
I Believe in Free will because everyone literally believe in Free will. Free will is the idea that we are able to have choice in how we act and assumes that we are free to chose our behavior, in other words we are self determined. 
* Hopefully this helps!
 
        
             
        
        
        
Answer:
Zaroff first becomes bored with hunting big game, as it gets too easy for him. Eventually, he finds pleasure in hunting human beings but becomes bored with that too. That´s why he decides to hunt Rainsford, an experienced hunter because it seems like a challenge. 
Explanation:
Zaroff´s quest for entertainment takes him to immoral actions with no regrets. Although it´s important to be able to explore and practice entertaining activities for us, we should always have respect for others and especially any human life.