Final answer:
An additional action that adds dimension to the main action is typically a sub-plot or secondary narrative arc involving secondary characters or minor climaxes. These elements enrich the main plot by adding depth, complexity, and turning points that build and release suspense throughout the story.
Step-by-step explanation:
An additional action that reinforces and adds more dimension to the main action in a story is often referred to as a sub-plot or a secondary narrative arc. Sub-plots involve secondary characters or minor climaxes that support the overarching storyline. These narrative elements add complexity by providing additional conflicts, resolutions, or character development, which enhances the main plot and fleshes out the world of the story.
Secondary characters can also add depth by supporting or opposing the protagonist, contributing to the main action in meaningful ways. Moreover, individual actions by characters may influence others within the narrative, potentially amplifying the overall effect of the main action. By questioning what works effectively, writers can identify how to improve their story through these supplementary actions and character arcs.
In summary, emphasizing clear characters and actions through additional narrative details makes a significant difference to the reader's experience. It contributes to the development of a richer, more immersive story. This is why many stories have smaller climaxes before the main one, providing turning points that build suspense and enhance the storytelling.