One difference between Portugal and the rest of Southern Europe is that A. Portugal have little fertile farmland B. Portugal produces hydroelectric power C. Portugal has many healthy forests D. Portugal relies on fishing for food

C) germany is the anwser

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.