21. The trade routes shown on the map illustrate a reason for the increase in- A. manufactured goods to Europe
B. slaves in the New World
C. industry in Africa
D. European settlers in the colonies
HELLPP RN

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.