According to george vaillant's longitudinal studies, in middle age was more strongly related than intimacy to whether individuals would have an enduring and happy marriage at 75 to 80 years of age.

The answer to this question is "Generativity" which generally refers to the concern developed by people towards other people aside from himself/herself and his or her family. According to George Vaillant's longitudinal studies, GENERATIVITY in the middle age was more strongly related than intimacy to whether individuals would have an enduring and happy marriage at 75 to 80 years of age.

Ifound the exercise on the internet. attached is the list mentioned above.in order for a compound to be considered optically active it can't have any axis or plan of symmetry. the molecule  shouldn't also  be superimposable on its mirror image.with such considerations, the compounds that are optically active are: -third compound on the first image is optically active; -second and third compound from the second image are optically actives.