B. it conveys the subject of the paragraph.
A topic sentence is the main idea which is the subject of the paragraph. 
        
                    
             
        
        
        
Answer:
In response to Macbeth's questions, the witches in Act IV of Macbeth. 
hope you like my answer!
 
        
             
        
        
        
Answer:
it supports the authors purpose by telling the reader how much sugar people have eaten over time to entertain readers with surprising statistics.The authors include details about American and British diets to persuade readers that eating habits now are healthier than they were in the past.  and in the passage it says how the English made the sugar trade and how modern diets are unhealthy .
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Answer: i would say its the third option but i may be wrong
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answer
The author develops the central idea by giving examples. The author builds the suspense by using a series of analogies.
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