The answer happens to be A
<span>Ballads and epics are forms of verse which are often narrative.
Ballads are dancing songs. Traditional ballads emphasize central dramatic
event, and recount comic or heroic stories. Epics on the other hand are lengthy narrative poems
concerning serious subjects like details of heroic stories or deeds and events
important to a nation or culture.</span>
Both contains the elements of a narrative.
Explanation:
Note that idioms are expressions (words or sentences) that are used figuratively to communicate ideas in English.
For example, if in a passage one character John tells another Peter that 'I'm all ears, the word ear mentioned by John is an idiomatic expression that means he has given the other character his full attention. If you were to take it literally it would mean he is saying he is an ear.