Obviously it about sustaining equality. The excerpt is talking about how diversity is a problem, well equality is a way of trying to solve that problem. 
        
             
        
        
        
Plagiarism
If you do not properly quote another person's work it is as if you are stealing their work. This is a serious offense. 
 
        
             
        
        
        
Answer:
Based from the definition of terms presented, the following is the answer to the questions. 
1. B. The study of statistics such as birth rate and death rate. 
2. B. A group of symptoms that occur together. 
 
        
             
        
        
        
Okay so you just replace certain words in the sentences with the words in the brackets. For example, in the 2nd question you rewrite the sentence as Looking after animals is *far more* time consuming than looking after children. Hope this helps! :D