Where were H. heidelbergensis fossils primarily discovered?

Homo heidelbergensis fossils have been primarily discovered in Africa, Asia, and Europe, making this the most comprehensive option. This species is significant in the study of human evolution as it is thought to be a common ancestor of both Neanderthals and modern humans. The most notable fossil sites include locales like Germany, where the species was first identified, as well as various sites in Africa, such as Ethiopia, and in countries like Spain and France in Europe.

The other options are limited in the geographic context of H. heidelbergensis discoveries. For instance, fossils from North and South America, or from regions like Antarctica and Australia, have not been reliably attributed to this species, which is why those choices do not capture the broader distribution of H. heidelbergensis fossils. The sole discovery in Europe also neglects the significant finds in other continents, thus making the first choice the only accurate reflection of where these fossils have been found.