According to the Multiregional Model, what was significant about H. sapiens migration?

The Multiregional Model posits that the evolution of modern humans (Homo sapiens) occurred simultaneously in different regions around the world, rather than arising from a single point in Africa. A key aspect of this model is the concept of constant gene flow among various populations across continents. This gene flow facilitated the exchange of genetic material, which helped maintain some degree of continuity and genetic diversity among these regional populations.

This contrasts with the idea presented in the other options, which suggest either a lack of gene flow or overly restrictive geographic contributions to human evolution. The Multiregional Model emphasizes the interconnectedness of human populations and suggests that while regional adaptations occurred, the consistent exchange of genes allowed for shared traits and characteristics among humans globally.