Strongly disagree with the answer above. Brain drain refers to the migration in large numbers of home trained professional to greener pastures where there are better opportunities and welfare packages. This affects the ratio of one professional to the number of people he can serve, it also affects the number of professionals in a country hence leading to under development. Memory loss on the other hand is the depletion of the brain caused by exposure of the brain neurons to toxic substances, this is a characteristic feature of drug abusers. This should kindly be noted.

D- Because people tend to loose their memory after the consumption of drugs illegally.
Meanwhile, brain drain is the migration of educated and skilled people from their habitation to a more economically developed area.

the correct answer is memory loss. Brain drain is when the country loses professionalsas they immigrate to other countries.

The correct answer is D
Brain drain is the migration of educated and talented people from a less economically advanced area to a developed area. Therefore brain drain cannot be the correct answer. Temporal and permanent memory loss is a consequence of drug abuse and alcoholism

THE ANSWER IS BRAIN DRAIN,mental iilness....example smoking of cigrate.

Drug abuse can have a serious, life-changing impact on your child: their physical and mental health is at stake. The human brain is the most complex organ in the human body. Although it may weigh less than 3 pounds, it some what mysteriously controls both your thoughts and the physiological processes that keep you alive. Drugs and alcohol change the way you feel by altering the chemicals that keep your brain working smoothly.