(01.03 MC) Imagine you are a scientist studying ancient civilizations. You come across some ancient artifacts and after careful thought, determine the artifacts to be from a tribe of hunter-gatherers. You make this decision based on the presence of one particular artifact. From the list below, which artifact would have told you that the civilization was a tribe of hunter-gatherers? (4 points)

a
small clay pots

b
cave drawings of animals

c
tents made of animal hides

d
small rock hearth