Final answer:
Approximately 2 million Europeans emigrated to the Americas between 1500-1800, based on the conservative estimates and the knowledge of migration patterns during that period. The correct option is C.
Step-by-step explanation:
The question pertains to the migration of Europeans to the Americas between 1500-1800. While the transatlantic slave trade brought an estimated 10 to 15 million enslaved Africans to the Americas, the European emigration figures for the same period aren't as well-documented.
However, we know that during the 19th century and early 20th century, approximately 60 million Europeans emigrated to various continents, including the Americas. In the context of the given options for the question, the best approximation for the number of Europeans who emigrated to the Americas between 1500 and 1800 would be option (c) 2 million.
This figure is not an exact count but rather a relatively conservative approximate, considering the earlier period's less systematic migration processes and record-keeping.