What is the definition of “ballad”?

a poem or song in 14 lines with a strict rhyme pattern and meter
a narrative poem or song written without rhyme or regular meter
a narrative song or poem that follows a pattern of rhyme and meter
a lyric poem with meter intended to be sung rather than spoken

A narrative song or poem that follows a pattern of rhyme and meter.

Explanation:

A Ballad is a poem or the song that focuses on the specific story. Often ballad is about the love either lost or found or about an event or the interaction that mentions something about the human condition. A ballad often features a refrain means a group of lines or regular repeated lines.

Most ballads are written in four to six lines of a stanza and have regular rhythm and rhyme scheme.

a caption indicating the purpose of the diagram

explanation:

they fear for their lives