Answer:
I. simple story line III. tragic or sensational subject
D. I and III
Step-by-step explanation:
A ballad is a narrative which is written in the form of poetry. A simple story is told through the ballad. The everyday events which occur in the life of the people are the main topic of writing a ballad. The details about the characters are not much provided. Details are mentioned very little and in vague. Conventional phrases and phrases related to any specific culture are present ion the ballad.