Many Educated Europeans at the Turn of the Twentieth Century

Many educated Europeans at the turn of the twentieth century believed in a set of ideas called eugenics, which argued that

A) humans could produce "superior" people through selective breeding and that it was their national duty to prevent the disabled and other "inferior" degenerates from reproducing.
B) astrology, metaphysics, and spirit forces could be scientifically proven through psychical research and Eastern philosophies.
C) the invisible hand of the market was the only guiding force in the social and political order.
D) a universal language known as Esperanto should be taught to all children as a means of creating a global, unified culture.