In order to identify centres of craft production, which of the following is the best indicator of craft work?

Waste Materials

The correct answer is Option (4) →  Waste Materials

In order to identify centres of craft production, archaeologists usually look for the following: raw material such as stone nodules, whole shells, copper ore; tools; unfinished objects; rejects and waste material. In fact, waste is one of the best indicators of craft work. For instance, if shell or stone is cut to make objects, then pieces of these materials will be discarded as waste at the place of production