Until Recently,a Two-Stages-Of-Life Viewpoint Was Prevalent in Developmental Psychology

Until recently,a two-stages-of-life viewpoint was prevalent in developmental psychology.According to this perspective,physical and psychological functions were thought to _______________.

A) develop over the entire life span reaching a peak point in older adulthood
B) develop to a peak point in young adulthood but decline after that
C) develop to a peak point in late middle-adulthood but decline after that
D) develop to a peak point of middle-adulthood and remain stable after that