Why are third parties not successful

Third parties don't have the necessary money to fund themselves. And even if they did, they lack the infrastructure that is needed. Even if a third party meets those requirements, they might find other difficulties. 

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.