Answer:
Option C.
Step-by-step explanation:
To come up with theories about the past, is the right answer.
A person who studies and records details about the past is known as a historian. He has authority over it. Historians are regarded with the constant, systematic account and analysis of past incidents as associating with the human race; as well as the investigation of all history in time. Therefore, the main task of a historian is to come up with theories about the past.