What Pattern Did Migration Out of Europe Often Follow in the Nineteenth

What pattern did migration out of Europe often follow in the nineteenth century?

A) Migrants sought out anonymity so that they could re-create themselves as new people with new lives.
B) Families and friends would coordinate their migrations so that they would settle together in a new land.
C) Various churches sponsored migrant groups in order to increase the political clout of the churches in the new lands.
D) Migrants signed contracts with businesses to pay for their migrations in return for several years of labor in the business's factories or mines.