Which is a characteristic of prehistoric people?
a. They cooked their food in stone ovens.
b. They made decorative pieces to trade for goods.
c. They used fire to harden clay pots and vessels.
d. They wore animal skins for clothing
"d. They wore animal skins for clothing" would be the best option from the list, although it should be noted that a better definition of "prehistoric" would be that writing didn't exist.