The argument about nature as well as nurture has become one of the earliest psychological problems. The discussion focuses on the fundamental component of individual development from inherited characteristics as well as environmental influences.
For just about any phenotype of traits, the response has been both, as well as a pertinent question is on whatever degree various issues decide the characteristic within the same limited context, as well as how external influences interact against genetics.
The four possible solutions of the above social problems are; Poverty-By providing education, skill training and job opportunities in a society. Unemployment-Providing job-oriented education,training to the people by Government to solve the problem of unemployment.
Dana (30) most likely due to people becoming more stable in "Mid-Life," A range from around 25-45. It starts to become unstable around 50, so my guess would be Dana (30)