Final answer:
The claim that three species of Homo sapiens exist today is false; only one species, Homo sapiens, currently exists. Other species within the genus Homo are extinct.
Step-by-step explanation:
The statement that there are three species of Homo sapiens living today is false. Currently, there is only one species of human, Homo sapiens, that is alive today. Throughout history, the genus Homo has included multiple species, such as Homo erectus and Homo neanderthalensis, but these have all gone extinct. Homo sapiens is the only species that has survived and represents the entirety of modern humans. Scientific evidence supports the Out of Africa theory, which posits that modern humans evolved in Africa and then spread across the world, sometimes interbreeding with other hominin species before those species went extinct.