Answer:
B. By invoking their muse
Step-by-step explanation:
Epic singing originated from the need to show and celebrate an event or personality. These were usually war conflicts and feats of war.
Writers of epics typically star their poems by invoking their muse. In the Iliad, in the beginning, the writer invokes his muse "Sing, Goddess, Achilles rage". This is an epic invocation.Epic invocation serves as an introduction to upcoming events. The writer invokes one of the nine muses of Greco-Roman mythology. The poets ask from them usually inspiration, knowledge or some kind of skill.