Which statement about human evolution is true? (a) The earliest fossils of modern humans are almost 200,000 years old. (b) Humans are descended from chimpanzees. (c) Modern humans are the only...

Which statement about human evolution is true?

(a) The earliest fossils of modern humans are almost 200,000 years old.

(b) Humans are descended from chimpanzees.

(c) Modern humans are the only hominids that used tools.

(d) During human evolution, large brains evolved before upright posture.