It is "..<em>Until today no animal has killed another animal..."</em>One of the consequences of totalitarianism is that of turning equals against each other.The mentioning of the word killing and its use to show that the animals  were being put in different positions and made to fight against those who did not share the same ideas,reveals the horrors of the system.The cruel conclusion is sad and it hurts.It is obviously dreadful.
 
        
                    
             
        
        
        
Roses uses the pentameter which is not so modern, while Night does not have a rhyme scheme is nor written in a pentameter
        
             
        
        
        
The answer is A for ethos is the appeal towards an expert recommending something to you