The Fact That Upper Paleolithic People Lived at Higher Population

The fact that Upper Paleolithic people lived at higher population densities than Neanderthals is evidence of which of the following statements?

A) Upper Paleolithic people were able to obtain more food from their environment than Neanderthals.
B) Upper Paleolithic people lived in larger social groups than Neanderthals.
C) Upper Paleolithic people lived longer than Neanderthals.
D) Upper Paleolithic people ate better food than Neanderthals.