Answer:
The answer is implantation
 
        
                    
             
        
        
        
In his theory of Cognitive development, Jean Piaget proposed that humans progress through four developmental stages: the sensorimotor, preoperational, concrete operational and formal operational period.
 
        
             
        
        
        
Lol there arent any choicess?? hahaha lol 
        
                    
             
        
        
        
<span>A study performed in 2008 found that 1 in five African Americans lacked health insurance.
This underpins some social issues that need to be solved in order to address fully the African Americans question in the United States, as health insurance expenses could be vital in some procedure in the States. 
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