Archaeologists have discovered the scapula, ulna, and metacarpals of an ancient human skeleton. What part of the body have they found?

The hand

Explanation:

The scapula is in the shoulder and the ulna and metacarpals are in the hands and arms

the principles and empirical processes of discovery and demonstration considered characteristic of or necessary for scientific investigation, generally involving the observation of phenomena, the formulation of a hypothesis concerning the phenomena, experimentation to test the hypothesis, and development of a conclusion that confirms, rejects, or modifies the hypothesis.