Afire department has posted the following message in a prominent location: "the smith city fire department is committed to professional excellence through a tradition of protecting lives, property, and the environment by providing the highest quality of service in prevention, fire protection, emergency medical services, and community preparedness." this is an example of a statement.

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.