A positive migration rate accounts for most of the population growth of Europe. Thus, the correct option is D.
What is migration?The long-term relocation of a person or group is known as human migration. Many categories can be used to categorize migrations. First, we can distinguish between domestic and international migration.
In contrast to international migration, domestic travel is the movement of people and families within a single country. Migration can also be forced or voluntary, second.
Whether internal or external, the majority of voluntary movement is made in search of better job or housing opportunities.
Forced migrations often consist of people who have been forcibly moved as slaves or prisoners, or who have been ejected by governments during war or other political upheavals.
Between these two categories are the voluntary migrations of refugees fleeing conflict, famine, or natural disasters. Thus, the Europe has hight migration rate.
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