What does foreshadowing provide the readers in the story

1: this would more be literature, but okay!

2: Foreshadowing provides what can help you to discover what happens next in the story, to infer what is going to happen. It gives you fore (before) shadowing (what is behind, inferred).

lincoln presided over the union victory in the american civil war, which dominated his presidency. a former whig, lincoln ran on a political platform opposed to the expansion of slavery in the territories. his election served as the immediate impetus for the outbreak of the american civil war.

b is the answer i am assuming