I give Timothy a positive reinforcement of a candy bar when he does something I like. I punish him by squirting him with a squirt gun when he does something I don't like. In doing this, I am applying the principles of in an attempt to modify his behavior. Group of answer 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.