Exit all of the following played a role in the great depression except which one?
a. large banks investing heavily in the stock market and making risky loans
b. an under production of goods and services
c. a decline in international trade
d. severe deflation

b. an under production of goods and services

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.