Sixteen-year-old Sam suffered a traumatic brain injury due to oxygen deprivation. Once released from the hospital, testing showed Sam's reading comprehension went from a college level to a fifth-grade level. His parents hired him a tutor.
Based on the concept of plasticity, what is Sam's prognosis?

Where is the map? explain the choices?

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.