The correct option is: (b) improving the quality of human populations by the application of genetic principles
Explanation:
The term 'Eugenics' is coined by Francis Galton. It is the study of improvement of human race by controlled selective breeding between individuals of desirable traits.
On the other hand 'Euphenics' is the symptomatic treatment of genetic disease of man. It deals with control of several inherited human diseases, especially inborn errors of metabolism in which the missing or defective enzyme has been identified e.g., phenylketonuria. 'Euthenics' is the study of environmental conditions that contribute in the improvement of already existing human beings. 'Obstetrics' is the science related with the pre natal, natal and post natal care of women.
