heather just failed her sculpting class. from this failure heather concludes it was her fault, she has no talent, and she will always do poorly in sculpting. what is heather displaying?

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.