What is meant by 'brain drain'?

A. Increase in the population of mentally retarded or brainless people

B. The increasing medical facilities which have resulted in decrease in the number of mentally retarded people

C. The marriage of highly intellectual people so as to add more intelligent progency to the population

D. The migration of highly qualified or skilled people to better places of employment

Answer: Option D

Solution(By Examveda Team)

Brain Drain is the departure of educated or professional people from one country, economic sector, or field for another usually for better pay or living conditions.