Eugenics and genocide most often are pursued in a. stable political, economic, and social environments b. unstable political, social, and economic environments c. periods of increased internationalism and humanitarianism d. periods of economic prosperity and rising standards of living

B. unstable political, social, and economic environments

Explanation:

Eugenics and genocide are most often pursued in countries or regions that suffer from instability. Eugenics refers to a philosophy that attempts to improve the human race by encouraging reproduction of "desirable" people and discouraging that of "undesirable" ones. On the other hand, genocide refers to the systematic killing of people who belong to a particular ethnic, social or cultural group. Both of these actions are often justified by a desire to "improve" the population. This desire is more common in countries that are struggling politically, socially or economically.

the telephone is the answer

answer; overt behavior;