who bases conclusions on hard evidence?
a. archaeologist and psychologist
b. historian and psychologist
c. historian and archaeologist

Option C.

Explanation:

Historian and archaeologist, is the right answer.

Historical method is the gathering of methods and guidelines that historians and archaeologists employ to investigate and record accounts of the past. Historians and archaeologists use evidence from both the primary and secondary sources and oral records to elucidate their issues. They have to determine what data is most relevant and reliable as evidence