The best way to complete this sentence is "The Sima de Huesos" located in Spain contains human fossils.
What is "The Sima de Huesos"?
This is a cavity that can be found near Burgos and that have helps paleontropologies to understand the process of hominization or the process of evolution that led to the human species.
What does this place contain?
This place contain a large variety of human fossils. Indeed it is the place with the most human fossils.
Learn more about fossils in: https://brainly.com/question/6867325
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