An archeologist uncovers bones he suspects belonged to a relative of today's modern horse. What is the best method of testing this belief?

The best method for testing this belief would be to conduct a DNA analysis of the bones. By comparing the extracted DNA with the DNA of modern horses, scientists can determine the genetic relationship and confirm whether the bones belonged to a relative of modern horses or not. Other methods such as radiocarbon dating and morphological analysis can also be used to support the findings from the DNA analysis.