<prompt> Environmental Manipulation which enable genes to express themselves readily is known asPositive eugenicsEuthenicsNegative eugenicsGenetic Counselling  <response>: Eugenics Sir Francis Galton: Is a social philosophy which advocates the improvement of human hereditary traits through various forms of intervention Genetic Manipulation.Euthenics: Deals with human improvement through altering external factors such as education and the controllable environment, including the prevention and removal of contagious disease and parasites, environmentalism, education regarding home economics, sanitation, and housing Environmental Manipulation. 