Mary has been in a continual state of dysfunction that has kept her from feeling truly happy or well-adjusted. however, she has never had a full-blown depressive episode. mary is most likely suffering from disorder.

The answer is the third one or c

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.