Discuss the legal, ethical, and policy responsibilities teachers have related to the educational, developmental, and medical services for individuals with disabilities and their parents/guardians

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.

Idont understand the question

S^2 = a4^2 = a4 * 4 = a16 centimeters = area of the square