the use of poetic verse throughout the epic
a narrative voice that tells the story
elevated or eloquent, style
compelling speeches
An epic poem is about a hero's journey. In the epic the hero and his accomplishments are described in detail with elevated language. The hero often gives speeches to inspire others. Since the hero's journey is a story of the hero's trials, it is written in a narrative voice.
Yes because it is informal
The answer is -the alarmed tone of reporters, -sound effects, and -the voices of frightened people
You would need to introduce a list.
For example you could have: My shopping list contains of; milk, bread, and yogurt.
Another purpose is to separate clauses.