Read the following quote from paragraph 3.
"If we dig part of a site, we destroy it," said David Hurst Thomas, a curator in
anthropology at the American Museum of Natural History in New York.
The author most likely uses an appositive in order to identify Thomas as-
an eminent archaeology professor
an expert in the field he is speaking
about
an anthropologist rather than an
archaeologist
an advocate of digging less at
archaeology sites.