Explanation: From the given options, a flint spearhead could be carbon dated. Carbon dating is a technique that uses the radioactive isotope carbon-14 (C-14) to determine the age of organic materials. Flint is a type of naturally-occurring volcanic glass that is made up of minerals and organic material. Because it is made of both organic and inorganic elements, a flint spearhead could be carbon dated. Bronze is made of copper and tin, which are not organic materials. Stone jars are typically made of basalt, marble, or limestone, which also are not organic materials.