Immigration preferences based on potential productivity causes change in employment.
Option: B
Explanation:
When a country start giving preferences to the immigrant skilled labor, the workforce of its own suffers a lot. Because they start facing a steep competition from the outsiders who is entering into their country for high package salary, incentives and other facilities.
Mainly from developing countries to developed countries this type of flow is noticed which is also known as Brain drain. Like from India to U.S many IT workers and software professionals move for better packages which cause problem in employment for the native Americans.
