Why is peripeteia important in a literary work?

It motivates the reader to find meaning in a work.

Readers like to be surprised.

It prevents the reader from becoming frustrated.

It explains the theme to readers who may have missed it.

Readers like to be surprised.

Explanation:

Peripeteia is a literary device where the events took a tragic but sudden turn, surprising the readers, audience or anyone reading or seeing it. It is also primarily used or associated with literary works.

The use of peripeteia is an indication of a dramatic event where the scenes or events took a sudden turn from the free flow of things. This gave a surprise to the readers and audience, providing a sudden shift into the fate of the protagonist from good to worse.