Answer:
The correct answer for this question is B. closed stratification system. 
Explanation:
This concept refers to the inability to move between the layers of a social system. 
 
        
             
        
        
        
The correct answer to this open question is the following.
Although there are no options attached we can answer the following.
Thomas Paine's great accomplishment toward the American Revolution was the publication of a pamphlet titled "Common Sense" in 1776, inviting all the American Colonists to support the independence movement against the British crown. The main idea of this pamphlet was to convince colonists about the corrupt nature of the British government and the necessity to claim independence. 
Published in January 1776, "Common Sense" explained that representational government and the voice of the people were a much better form of government than an authoritarian monarchy. 
 
        
             
        
        
        
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The answer is C. Stock Exchanges
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