The correct answer is: a) Brain Drain.
Brain drain is the emigration of a large number of skilled professionals from a country, typically to developed countries in search of better pay and living conditions. This can have a negative impact on the country of origin, as it can lead to a shortage of skilled workers and a loss of intellectual capital.
Capital flight is the movement of capital out of a country, typically in response to political or economic instability. This can lead to a shortage of investment capital and a decline in economic growth.
Labor export is the movement of workers from one country to another, typically in search of better pay and working conditions. This can have a positive impact on the country of origin, as it can lead to remittances from workers abroad and an increase in foreign exchange reserves.
Emigration is the act of leaving one’s country to settle permanently in another. This can be for a variety of reasons, such as economic opportunity, political asylum, or family reunification.
In the case of Assam, the migration of skilled professionals is a form of brain drain. This is because these professionals are leaving the country to seek better opportunities elsewhere, which can have a negative impact on the economy of Assam.