The correct answer would be, hierarchical system.
Sabrina made effective use of hierarchical system.
Explanation:
When people arrange things physically or in their minds in an order from above to lower to lower to above, this is called as making hierarchical system. 
Hierarchies are seen in organizations where there is a top management which is then goes down to managerial level, which further divides into supervisors and then employees of the company which represents the lowest in hierarchy. 
Similarly hierarchical systems can be found anywhere. When Sabrina remembered the things she had to buy by remembering them from generalized top category to a lower more narrowed one, she was actually made an effective use of hierarchical system. 
Learn more about hierarchical system at:
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Agriculture, to infrastructure activities, to tourist attractions
        
                    
             
        
        
        
Answer:
Missing information:
a. Auguste Comte
b. Émile Durkheim
c. René Decartes
d. Karl Marx
The correct answer is : D.   Karl Marx
Explanation:
He says that there is a differentiation that marks one group as superior over another. This concept leads to social classes arranged as hierarchies. This stratification considers economic capacities among people and the division is mentioned in two main groups: The petite bourgeoisie and the underclass.
 
        
             
        
        
        
Probably the two most important contributions animals made to farmers was as food and transportation. Farmers raised cattle, hogs, chicken, goats, etc. for meat, milk, eggs, etc. Before cars horses and horse drawn carriages provided the only transportation. Before farm equipment plows were pulled by oxen.
hope this was HELPFUL