The answer is: A. extreme population management policies
Extreme population management policies refers to unnatural actions that implemented by humans in order to radically change the number of population in a certain area.
Both Eugenics and genocide can be included in this category. Eugenics is a political measure to promote a certain race to be 'inferior' and a certain race to be 'superior'. This influence citizen's dating preference and influence the number of children that were born from a certain race. Genocides is a mass killing of people from a certain race/ethnicity.
