Final answer:
Donald Johanson and his team of paleoanthropologists invested the bones discovered in 1974 in Ethiopia, which belonged to an early human named Lucy.
Step-by-step explanation:
Paleoanthropologists, specifically Donald Johanson and his team, invested the bones that were discovered in 1974 in Ethiopia. They stumbled upon a skeletal forearm and skull, and further inspection revealed that the bones belonged to an early human. The team recovered around 40 percent of the skeleton, naming it Lucy after the popular Beatles song.