An important feature of social aggression that distinguishes it from other forms of aggression in many mammalian species is that it is

I believe the answer is: dependent on testosterone

Testosterone played a role in increasing a mammals' tendency to display dominance toward another mammals.
Increasing testosterone often caused higher tendency to displayed aggressive behaviors, which is why the number of males of arrested for aggressive violence in human society far outnumbered the females.

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.