Eugenics and genocide are best described as examples of a. extreme population management policies b. common population management policies c. extreme diplomatic management strategies d. common diplomatic management strategies

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.