How did Father Junípero Serra spread Catholicism and Spanish culture in California? a. He built presidios to give Spanish people a place to live in California.
b. He founded missions in California to convert American Indians to Catholicism.
c. He founded a newspaper to spread Spanish teachings among American Indians.
d. He built missions to serve as bases for future territorial conquests.

What u need with

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.