The reason is because birth control is less expensive and easier for teens to get in many
other developed countries than in the United States. And teachers,
parents and physicians tend to be more accepting of teenage sexuality
and more likely to encourage use of contraception, said Sarah Brown,
chief executive of the Washington, D.C.-based National Campaign to
Prevent Teen and Unplanned Pregnancy.
        
             
        
        
        
Explanation:
The per capita income can not reflect the true state of economic development because if the income of a particular group have increased or have become rich and the income of other groups remain the same, it will reflect an increase in the per capita income.
 
        
             
        
        
        
I believe the answer is: Implementation.
The implementation development under this situation refers to the phase when an individuals start to take the details of the plan.
On the system in our current society, this usually happen after we graduate from university and started to carried out our life plan for our career.<span />