The correct answer is B) they measure the decay of carbon-14 in the bone to determine the age of ancient human remains.
Anthropologists use the absolute dating technique to study prehistory in that they measure the decay of carbon-14 in the bone to determine the age of ancient human remains.
We are talking about Radiocarbon dating that helps Anthropologist to date of an ancient fossil by measuring the carbon-14 content. This Carbon-14 is helpful because it is a radioactive isotope that forms when cosmic rays from atmosphere hit nitrogen molecules, oxidize and become carbon dioxide. That is why Anthropologist knows the data of an artifact that is found in an archeological center.