What scenario is the best answer of a frame narrative?

A frame narrative works best when it adds depth and complexity to the main story by providing context, perspective, or a unique framing device. For example, using a frame narrative to have a character tell a story within a story can help explore themes of storytelling, memory, or manipulation of truth. Ultimately, the best scenario for a frame narrative is one that enhances the main narrative and engages the reader in a thought-provoking way.