The foreshadowing hinting that Huck will help Jim get free is "soon give up the idea of telling Miss Watson".
It should be noted that foreshadowing simply means the hints that are given in a literary work for the readers to know what will happen later in a story.
In this case, the foreshadowing hinting that Huck will help Jim get free is "soon give up the idea of telling Miss Watson". It gives the hint of what will occur next.
Learn more about foreshadowing on:
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