Final answer:
The element not typically found in epics is a linear plot; epics usually have non-linear storytelling. Characterization, heroic deeds, and complex language are all major conventions of epic content.
Step-by-step explanation:
Among the options provided, the one that is not a major content convention of the epic is a linear plot. Epics often incorporate non-linear storytelling with multiple sub-plots that support the main narrative. They frequently include digressions, flashbacks, or foretellings that provide depth to the story and its characters.
Characterization is essential in epics, as it develops the heroes and other figures within the story. Heroic deeds form the backbone of an epic, showcasing the extraordinary abilities and valor of the main character. Lastly, complex language and elevated diction are typical of epics, providing a grand and formal tone to the narrative.