What evidence supports the "Out of Africa" hypothesis?

The option indicating that genetic studies show a single origin in Africa is the strongest evidence supporting the "Out of Africa" hypothesis. This hypothesis posits that modern humans (Homo sapiens) evolved in Africa and subsequently migrated to other parts of the world, replacing or interbreeding with local archaic human populations.

Genetic studies have revealed that mitochondrial DNA, which is inherited maternally, shows the highest diversity among African populations. This greater genetic diversity suggests that modern humans have been in Africa longer than anywhere else, supporting the idea of a common African origin. Additionally, genomic analyses have demonstrated that non-African populations possess fewer genetic variations, indicating that they are derived from a smaller subset of the original African population that migrated out of Africa.

In contrast, fossils found only in Europe, language patterns tracing back to Asia, or tool use originating in the Americas do not provide direct evidence for human evolution's African roots or the subsequent migration patterns, making them less relevant to the "Out of Africa" hypothesis.