Scott sleepwalks. when is scott most likely to exhibit this behavior?

The answer for this question is: When he is in non-REM sleep
When people enter the REM sleep, the body will limit their motoric movements so they could focus on resting it.
Which means that it almost impossible for people to do large movement such as walking when they're already entering this stage of sleep.

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.