The correct option is D Ballad
A ballad is a poem or song narrating a story in short stanzas. Traditional ballads are typically of unknown authorship, having been passed on orally from one generation to the next. For example, "Beginning in the Renaissance, poets have adapted the conventions of the folk ballad for their own original composition". Hence, Option D is correct. Among the rest of the options, elegy means a poem of serious reflection, typically a lament for the dead, hymn means a religious song or poem of praise to God or a god, sonnet means a poem of fourteen lines using any of a number of formal rhyme schemes, in English typically having ten syllables per line .These options do not express the intended meaning, hence incorrect.