In 1910, the colonies of transvaal, the orange free state, cape colony, and natal were united to form the union of south africa. which of the following statements is true regarding the union of south africa?

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.