While driving around a curve, your rear tires lose traction and your vehicle starts to skid. what should you do?

To avoid an accident if your vehicle skids, the first rule is to not bear down on the brakes. You keep your eyes in line with where you want to go and allow the vehicle to correct its direction.To avoid skids all together, use the accelerator carefully and steer carefully.

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.