C. Is the Correct answer. Benjamin is able to read the side of the van and realizes that it is a knacker, or glue maker, and not a veterinarian as the animals had been led to believe. They yell to Boxer hoping he can escape but he is too weak to break free from the van. 
        
             
        
        
        
Answer:All improved 
Explanation: because each time I'd read I'd become more informed about the paragraphs meaning.