Celia puts her toys away in the toy chest and goes to eat dinner. While she is out of the room, her brother takes all of the toys and puts them under his bed. A child who has a theory of mind would predict that when Celia returns after dinner, she will

3. i would say one, but one is not prime nor composite.

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.