Answer:
A: A historian cites a series of secret cartoons drawn while Germany
occupied France during World War II in order to draw conclusions
about an underground resistance movement.
Step-by-step explanation:
Historians have different types of material sources, this is a primary source, which would be something that was written or recorded in the time that the events were happening, or by interviewing someone that lived during the event, in this case the historian has a series of cartoon drawn while Germany occupied France, he can use them to draw conclusions about underground resistance by the French that tried to fight back the german occupation.