Answer:
Good choice is:
d. required the careful use of sources and considered human motivations.
Explanation:
Both Herodotus and Tuchydides were concerned with a record of events that was not a work inspired in Greek myths or the legends of the gods, but by facts. Herodotus uses his own descriptions and observations, he records witnesses´ testimony, but he sometimes questions some versions, and even called "a silly fable" the story of Heracles, a figured revered by the Greek. Thucydides says that he did not record just the first story he heard, nor was he guided only by his own impressions. Thucydides wrote about the Peloponnesian War, the war betwwen Sparta and Athens.