Answer:
The zone of proximal Development 
Explanation:
The zone of proximal development is a developmental stage in which a child cannot carry out difficult or tedious tasks or skill on his or her own but can be done through guidance or by been assisted.
It is the difference between what the child can do without help and what he can't do with help. 
Therefore the child has to be guided or help by his parents or older siblings who are more knowledgeable than him.
 
        
             
        
        
        
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I think it is the cell membrane, but there is a possibility it is the cell wall. I think the cell membrane is correct because the skin does allow certain things into your skin cells, such as water. Similarly, cell membranes allow certain things in the cell. The cell membrane basically acts as the security guard of the cell.
        
             
        
        
        
The correct answer is wisdom. 
Wisdom refers to comfort, ease and skill when conducting oneself and understanding the meaning of life. Wise individuals possess strong emotional intelligence and emotional regulation, practical knowledge and the ability to make their life more worthwhile. They are generally calm, content and accepting, and they do not put pressure on themselves and others to achieve perfection. 
        
                    
             
        
        
        
Nationalism would be the answer