The answer is B: Less than a decade ago, the HSUS...an affiliate [Human Society International].
  Brackets are used to give the writers (when they need to add information) an opportunity to add an explanation, or emphasis to a word, or change a <em>quote to fit to a sentence, but without changing the meaning of the text</em>. In A) <em>global work</em> doesn't need explanation; C) <em>decade</em> doesn't need explanation; D) <em>HSUS</em> was already explained in the first sentence of the text.
 
        
                    
             
        
        
        
B, if you only study for a few minutes in each subject each night you have the chance to review what you studied the night before
        
             
        
        
        
Answer:
 the correct answer is option ( C ) Freud 
Explanation:
Hope it helps you 
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