The correct answer is B. Encouraging procreation only among the most "fit" members of society.
Step-by-step explanation:
The term "Eugenics" refers to programs, beliefs, practices, laws, etc. that promote the idea human population should be improved by only allowing those that fit to reproduce and prevail over time, while those considered to be unfit should be excluded, which improves the genetics of human groups by artificial selection. Eugenics is quite controversial not only because it classifies groups of people as superior or inferior but because the practices and methods are considered as unethical an example of this is the holocaust that aimed at eliminating the jew population as well as other social sectors in Germany. According to this, it can be concluded eugenics is a program for "Encouraging procreation only among the most "fit" members of society".