Answer:
The hinting at an important event through small details in the passage. This could include the author hinting at something themselves, the character in the passage hinting at an event verabally or through actions and movements, and even nature preparing for something eventful to occur.
Step-by-step explanation:
Wikepedia also describes foreshadowing as "a literary device in which a writer gives an advance hint of what is to come later in the story. Foreshadowing often appears at the beginning of a story, or a chapter, and it helps the reader develop expectations about the upcoming events. A writer may implement foreshadowing in many different ways."