PLEASE HELP!!

What is Social Darwinism?

a) the application of ethics to social problems in order to eliminate issues connected to poverty, crime, education, and workplace reform
b) the idea that other societies should be indoctrinated with European culture in order to become civilized
c) the theory that claimed people and societies are guided by the same principle of natural selection that determines the evolution of animals and plants
d) the belief that an individual’s or a group’s social value is based on physical appearance

i think its b????